Ask a 100-page contract about a termination clause. Ask a policy manual about vacation rules. Ask a research report about a specific statistic.

You’ll often get a confident answer—but then you’re left wondering:

• Which page was that on?
• Did the AI actually find it?
• Can I verify it myself?
• What if it’s wrong?

That’s why Document Agent was built around a simple idea:

Every important answer should be connected back to the original document.

A researcher built this app because of frustration with LLMs hallucinating and an inability to work alongside AI because of its blackbox interior. Document Agent isn’t perfect, no AI is. But because of the citation ability it speeds up verification. The citations aren’t perfect either (just like peer-reviewed research!), but a quasi-auditable process is better than what other tools provide.

Ask Questions. See the Evidence.

When you upload a document to Document Agent, you can ask questions in plain English:

• What is the cancellation policy?
• Who signed this agreement?
• What does the report say about absenteeism?
• How much was budgeted for transportation?

But instead of simply generating an answer, Document Agent attempts to provide supporting evidence from the source document.

The goal isn’t just to answer questions.

The goal is to help you verify them.

Clickable Citations

When Document Agent references information from a document, it can provide citations that link directly back to the source pages.

This means you can quickly move from an AI-generated answer to the underlying evidence without manually searching through dozens—or hundreds—of pages.

For long PDFs, this can save substantial time.

Instead of hunting for a paragraph buried somewhere in a report, you can jump directly to the relevant section.

Highlighted Source Passages

The most useful part isn’t the citation itself.

It’s the highlight (or multiple page numbers!).

When available, Document Agent can highlight the specific passage that supports an answer. Rather than opening a page and forcing you to search for the relevant text, the supporting evidence is visually identified for you.

This creates a much faster workflow:

1. Ask a question.
2. Read the answer.
3. Open the citation.
4. Verify the highlighted source passage.

The result is an experience that feels less like “trusting an AI” and more like “reviewing evidence.”

Why This Matters

Large language models are impressive, but they are not perfect.

Even advanced models occasionally misunderstand context, combine information incorrectly, or make unsupported inferences.

For casual conversations this may not matter.

For contracts, reports, policies, legal documents, research studies, financial records, and technical manuals, it matters a great deal.

Being able to inspect the original evidence helps users:

• Verify important claims
• Build confidence in answers
• Catch misunderstandings quickly
• Share supporting documentation with others
• Reduce time spent manually searching documents

Built for Trust

Many AI tools focus on making answers sound natural.

We think document AI should focus on making answers trustworthy.

That means preserving the connection between an answer and the source material that supports it.

Document Agent was designed with that principle in mind.

Because when you’re making decisions based on a document, seeing the evidence is often more important than getting the answer itself.

The post Why We Built AI That Shows Its Work appeared first on Super Tool.

The text may be too light, the background may be too dark, or the document may have been scanned with poor contrast. In other cases, you may simply want to reverse the colors to create a cleaner version for reading, printing, or annotation.

Fortunately, it’s possible to invert PDF colors in just a few seconds.

What Does It Mean to Invert PDF Colors?

Inverting colors means reversing the colors in a document.

For example:

• Black text becomes white
• White backgrounds become black
• Dark gray becomes light gray
• Light colors become dark colors

This is sometimes called:

• Reverse PDF colors
• Negative PDF
• PDF negative
• Reverse black and white PDF
• Invert scanned document

The result is a document with the opposite color scheme of the original.

Why Would You Invert a PDF?

There are several reasons people reverse PDF colors.

Improve Readability

Some scanned documents have poor contrast. Reversing the colors can make text stand out more clearly.

Create a Dark Mode Version

Many people prefer reading white text on a dark background, especially when viewing long documents on a screen.

Fix Difficult Scans

Some scanned documents contain faded text or unusual color combinations. Inverting the colors can make details easier to see.

Save a Large Print Job

Occasionally a PDF contains a dark background that consumes excessive ink or toner. Reversing the colors may create a more practical version for printing.

Accessibility and Visual Comfort

Some users find certain documents easier to read when the contrast is reversed.

Common Documents That Benefit from Color Inversion

You may want to invert colors in:

• Research papers
• Books and manuals
• Technical documentation
• Engineering drawings
• Historical scans
• Classroom handouts
• Court documents
• Contracts
• Medical records
• Photocopied documents

How to Invert PDF Colors

Using the PDF Color Changer is simple:

1. Upload your PDF.
2. Click Recolor Parts of a PDF.
3. If desired, switch to Greyscale mode.
4. Enable the Reverse option (click the checkbox on the lower left panel).
5. Preview the results.
6. Download the modified PDF.

The tool processes the entire document while preserving the layout and formatting.

Invert Colors vs. Clean White Mode

Not every PDF needs full color inversion.

If your document has a gray, yellow, or dirty-looking background, the Clean White slider may produce a better result.

Use Reverse When:

• The document has poor contrast.
• Dark areas overwhelm the page.
• You want a dark-mode version.
• You want to create a negative image.

Use Clean White When:

• The background is gray or yellow.
• The scan looks dirty.
• You want a cleaner printed document.
• You want to reduce toner or ink usage.

Many users experiment with both options to find the most readable version.

Can I Invert Colors and Change Colors at the Same Time?

Yes.

After reversing the document, you can also change colors.

For example:

• Convert black text to blue.
• Replace dark areas with another color.
• Create custom color schemes for printing.
• Produce documents that work around printer ink issues.

This can be particularly useful if your printer is out of black ink but still has color ink available.

Will Inverting Colors Affect Printing?

It can.

Before printing, review the preview carefully.

Some documents become significantly easier to print after color inversion, while others work better with the Clean White feature instead.

The best choice depends on the specific document and printer.

Frequently Asked Questions

Can I invert PDF colors online?

Yes. You can upload a PDF, reverse the colors, preview the results, and download the modified version without installing software.

What is a PDF negative?

A PDF negative is simply a PDF with inverted colors. Black becomes white, white becomes black, and other colors are reversed.

Can I invert a scanned document?

Yes. Inverting colors often works particularly well for scanned documents that have poor contrast or unusual backgrounds.

Can I reverse black and white PDFs?

Yes. Black-and-white PDFs are often excellent candidates for color inversion because the transformation is simple and easy to preview.

Try It Yourself

If a PDF is difficult to read, has poor contrast, or would benefit from a reversed color scheme, try inverting the colors and comparing the results.

Using the PDF Color Changer, click Recolor Parts of a PDF, switch to Greyscale, enable Reverse, and preview the transformed document before downloading.

The post How to Invert PDF Colors (Reverse Black and White PDFs Online) appeared first on Super Tool.

Fortunately, you can often remove unwanted background shading and restore a cleaner appearance in just a few seconds.

Why Does My PDF Have a Gray Background?

Many PDFs are created from scans of physical documents. During scanning, the scanner captures more than just the text:

• Paper texture
• Shadows from folds or creases
• Yellowing from aging paper
• Dust and scanner artifacts
• Light discoloration from photocopies

As a result, areas that should be pure white become light gray or off-white.

This is especially common with:

• School worksheets
• Legal documents
• Contracts
• Medical records
• Historical documents
• Government forms
• Photocopied paperwork

Why Remove the Gray Background?

A cleaner background provides several benefits.

Improved Readability

Dark text stands out more clearly against a white background. This can reduce eye strain and make documents easier to review.

Better Printing

Many printers reproduce light gray backgrounds even when they seem insignificant on screen. Removing those background pixels often produces cleaner-looking printouts.

Reduced Ink and Toner Usage

Gray backgrounds contain thousands or even millions of pixels that your printer may attempt to reproduce. Cleaning those backgrounds can significantly reduce toner and ink consumption.

Cleaner Copies and Scans

Documents often degrade after multiple rounds of scanning and copying. Removing background shading can help restore a more professional appearance.

How to Remove Gray Backgrounds from a PDF

One approach is to use a PDF editor and manually adjust each page. However, that can be time-consuming and often requires expensive software.

A simpler option is to use a PDF cleanup tool that automatically brightens the page background while preserving text and graphics. The SuperTool PDF Color Changer includes a Clean White slider that can remove gray, yellow, and off-white backgrounds in seconds.

The process is typically:

1. Upload the PDF.
2. Preview the document.
3. Increase the background-cleaning or “Clean White” setting.
4. Review the results.
5. Download the cleaned PDF.

The goal is to make the page background white while keeping text readable and sharp.

Can I Remove Yellow Backgrounds Too?

Yes.

Many older documents develop a yellow or beige appearance over time. Scanned copies of those documents often preserve that discoloration.

Cleaning the background can make old documents appear much closer to a modern digital original.

Common examples include:

• Old records
• Archived documents
• Library materials
• Historical forms
• Estate and legal paperwork

Can This Make a Scanned PDF Look More Professional?

In many cases, yes.

Removing unwanted background shading can make a document look:

• Cleaner
• More modern
• Easier to read
• Easier to print
• Better suited for sharing electronically

While it won’t recreate the original digital file, it can dramatically improve the appearance of many scanned documents.

What Types of PDFs Benefit Most?

The biggest improvements are often seen in:

• Black-and-white scans
• Photocopied documents
• Classroom handouts
• Contracts and agreements
• Government forms
• Receipts
• Court filings
• Instruction manuals
• Medical paperwork

Bonus: Change PDF Colors at the Same Time

Some PDF tools allow you to clean the background and change colors simultaneously.

For example, if your printer is out of black ink, you can:

• Remove the gray background
• Convert black text to dark blue
• Print using color ink instead of black ink

This can be particularly useful for shipping labels, forms, homework assignments, and other urgent documents.

Try It Yourself

If your PDF has a gray, yellow, or dirty-looking background, try cleaning it before printing. A cleaner background can improve readability, reduce ink usage, and make scanned documents look dramatically better.

Using the PDF Color Changer, click “Recolor Parts of a PDF”, switch to Greyscale, and adjust the Clean White slider until the background looks right. Note that clicking Reverse can change a mostly black to a mostly white document and vice-versa. Preview the results and download your cleaned PDF in seconds.

The post How to Remove Gray Backgrounds from PDFs (and Use Less Ink When Printing) appeared first on Super Tool.

Screenshots, product photos, scanned inserts, diagrams, and other embedded pictures can make an .xlsx file grow very quickly. A workbook that should be a few megabytes can easily become tens or hundreds of megabytes once images are added.

In these cases, the fastest way to reduce Excel file size is simply to compress the images inside the workbook.

The frustrating part is that most ways of shrinking Excel files are destructive. They often remove formatting, strip out images, or export only the raw data.

That works in some cases. But for many users, it is not acceptable.

People often want to keep the spreadsheet exactly as it is — the formatting, layout, formulas, and structure — and simply make the file smaller.

We recently added a new feature to the Excel File Size Reducer that solves exactly that problem.

The new feature: compress images while keeping the spreadsheet intact

If your Excel file is large mainly because of images, the tool can now detect that and offer image compression as the first option.

Instead of removing images or rebuilding the spreadsheet, the tool reduces the amount of storage those images require inside the workbook.

The spreadsheet itself remains intact.

That means the compressed file still contains:

• formatting
• highlights and colors
• formulas
• sheet structure
• layout
• charts and tables
• the images themselves

The images stay in the workbook — they simply take up less space.

Why Excel files become so large

Excel files are often bloated because images are inserted at very large resolutions.

For example:

• screenshots pasted directly from a monitor
• photos inserted from a phone or camera
• exported diagrams from PowerPoint or other software
• scanned documents embedded in worksheets

These images may be thousands of pixels wide even though they are displayed much smaller in the spreadsheet.

That mismatch can dramatically inflate the file size.

Compressing or resizing those images can reduce the overall file size significantly without changing how the spreadsheet looks in normal use.

What the tool does

When you upload an Excel file, the app analyzes the workbook to determine what is contributing to the file size.

If images account for a large portion of the file, the app can offer an image compression path designed to shrink those images while preserving the spreadsheet itself.

Depending on the settings you choose, the tool can:

• compress embedded images
• reduce the resolution of oversized images
• convert certain image formats to more storage-efficient formats

These changes reduce the amount of space required to store the images inside the Excel file while keeping the spreadsheet usable.

The workbook structure, formulas, formatting, and layout remain unchanged.

Two different ways to reduce Excel file size

The tool now supports two different reduction approaches, depending on what you need.

1. Compress images while preserving formatting

This option is best when the workbook is large because it contains photos, screenshots, or graphics and you want to keep the spreadsheet intact.

The images remain in the workbook, but their storage size is reduced.

This is often the fastest and least disruptive way to shrink a file.

2. Use a more aggressive reduction approach

For cases where maximum size reduction is needed, the tool still supports the original workflow.

That approach can:

• remove images entirely
• strip formatting and workbook extras
• keep only selected columns
• limit rows
• split large datasets into multiple files
• export to XLSX, CSV, or compressed CSV

This route produces a much smaller file but may remove visual elements from the spreadsheet.

Why this update matters

Previously, users often faced an uncomfortable choice:

• keep the spreadsheet intact but leave it large
• or aggressively strip the file down to the raw data

Many real-world spreadsheets fall somewhere in between. They are large primarily because of images, but users still want the workbook to remain visually intact.

The new image compression feature fills that gap.

For many spreadsheets containing screenshots, photos, or other visuals, reducing the size of those images can shrink the file dramatically while preserving the spreadsheet itself.

A better experience for image-heavy spreadsheets

The update also improves the user experience.

Instead of forcing users to guess why a file is large, the app can now recognize when images are a major contributor and guide users toward the most relevant solution.

This makes it easier to quickly reduce file size without trial and error.

Try it

If you have an Excel file that has become too large because of embedded images, the new compression feature may allow you to reduce its size significantly while keeping the spreadsheet intact.

Upload the file here and the tool will analyze what is making it large and offer the most appropriate reduction options.

In many cases, compressing the images alone is enough to make the file much easier to store, share, and open — without sacrificing the structure of the workbook.

The post Reduce Excel File Size by Compressing Images (Keep Formatting Intact) appeared first on Super Tool.

Many home printers will not print a shipping label if black ink is depleted, even if color ink is full.

The good news: you can convert your USPS label to a dark color and print it using color ink only.

Why Printers Won’t Print USPS Labels Without Black Ink

Most USPS labels are:

• Black text
• Black barcode
• Black tracking code
• Black address block

When black ink runs out, printers either:

• Print blank text
• Print faded barcodes
• Refuse to print entirely

This is especially frustrating if you just created your label using USPS Click-N-Ship from the United States Postal Service website.

Can USPS Accept a Blue Shipping Label?

Yes.

USPS scanners read contrast patterns — not color itself.

As long as:

• The barcode is dark
• The background is white
• The print is crisp

The label will scan normally.

Dark blue, navy, and deep green work well.

Avoid light colors.

How to Print a USPS Label Using Only Color Ink

Instead of buying a new cartridge immediately, you can:

1. Download your USPS shipping label PDF
2. Upload it to SuperTool’s PDF Color Changer
3. Select dark blue
4. Download the recolored PDF
5. Print normally

Because the document is no longer black, your printer uses color ink instead.

No editing software required.

Best Color Settings for USPS Labels

Recommended:

• Navy blue
• Dark green
• Deep purple

Not recommended:

• Yellow
• Light blue
• Pastel colors
• Gray

Always maintain high contrast.

When This Is Especially Helpful

• You’re shipping Priority Mail today
• You’re mailing a return package
• You’re printing a prepaid label late at night
• Stores are closed and you need to ship now

Instead of delaying shipment, you can print immediately.

Try It Now

If your black cartridge is empty but your color ink still works, you can:

Recolor your USPS shipping label PDF and print today.

The post How to Print a USPS Shipping Label Without Black Ink appeared first on Super Tool.

That’s where the SuperTool Color Changer comes in. It’s a simple online tool that lets you convert the color scheme of your PDF so that what would normally print in black will instead print in another color your printer still has ink for. 

Why This Helps for Shipping Labels

Shipping labels often include:

• Black text and barcodes
• QR codes
• Parcel tracking details
• Address information
• Carrier logos

These elements are designed to print crisp and readable — but they don’t have to be black to work. The SuperTool color changer replaces the black and grays in your PDF with your chosen output color (like dark blue, red, or green), letting you print labels using color cartridges only. 

That means:

Your printer doesn’t need black ink to finish the job

Barcodes and QR codes remain scannable

You don’t need complicated design software

It works with labels, forms, and other essential printables, not just shipping documents 

How It Works

1. Upload your PDF label — upload the file directly into the Color Changer tool on SuperTool. 
2. Pick a color — choose a replacement color that your printer still has ink for. Dark blue is a popular and reliable choice. 
3. Download the new PDF — the tool substitutes all black pixels with your selected color. 
4. Print it! — send it to your printer and complete your shipping without missing a beat.

Real-World Use Cases

People use this tool for things like:

• Shipping & return labels when black ink runs out 
• Packing slips & invoices for orders going out 
• Boarding passes, admission tickets, forms when quick printing is needed 
• Barcodes and QR codes that still scan correctly after color change 

And it’s not limited to shipping — any PDF with black text and graphics can be converted. 

Need help specifically with USPS? See our step-by-step guide for printing a USPS label without black ink.

Get Started Now

No downloads. No software installs. Nothing complicated.

Head over to SuperTool’s PDF Color Changer and turn your black-ink problem into a color solution. (Plus, preview before you print so you always know what you’re getting!)  

The post How to Print Shipping Labels When You’re Out of Black Ink (Use Color Instead!) appeared first on Super Tool.

That’s why more real estate professionals are searching for demographics near an address, not just city- or ZIP-level statistics. Whether you’re assessing a potential investment, preparing a market analysis, or advising a client, understanding who lives nearby is often more important than the property itself.

What Does “Demographics Near an Address” Mean?

Unlike traditional demographic reports that rely on ZIP codes or census tracts, demographics near an address focus on people within a specific radius — for example:

• Population within 1, 3, or 5 miles
• Age distribution of nearby residents
• Household income and rent vs. ownership
• Racial and ethnic composition
• Household size and family structure

This approach aligns much more closely with how people actually experience neighborhoods. Buyers don’t think in census tracts — they think in walking distance, driving time, and nearby amenities.

Why Radius-Based Demographics Matter in Real Estate

ZIP codes and city averages often hide important variation. Two properties in the same ZIP can have completely different surrounding populations.

Radius-based demographics help answer questions like:

• Who is most likely to live near this property?
• Is this area dominated by renters or homeowners?
• Does the nearby population match my buyer or tenant profile?
• How dense is the surrounding area, really?

For commercial real estate, this becomes even more critical. Retail, healthcare, and multifamily developments often succeed or fail based on nearby population characteristics, not municipal boundaries.

Common Use Cases in Real Estate

Real estate professionals use nearby demographic data for:

• Residential listings – adding objective neighborhood context
• Investor analysis – evaluating rental demand and income levels
• Commercial site selection – estimating customer base size
• Appraisals and market reports – supporting assumptions with data
• Client presentations – clear, defensible neighborhood summaries

In many cases, having any credible demographic snapshot is better than relying on intuition alone.

The Problem With Most Demographic Tools

Many existing tools were not designed for speed or flexibility:

• Complex GIS software requires training
• Enterprise platforms are expensive and slow
• Free tools often lock data behind rigid geographies
• Reports take too long to generate for real-world workflows

Real estate work moves quickly. Waiting hours — or days — for demographic reports is rarely practical.

A Faster Way to Get Demographics Near an Address

Modern tools now allow you to enter a single address and instantly calculate demographics within a chosen radius, using recent Census and American Community Survey data.

This makes it possible to:

• Adjust radius sizes on the fly
• Compare multiple locations quickly
• Generate repeatable summaries for reports
• Get answers without GIS expertise

For professionals who need speed, clarity, and defensible data, this approach removes a lot of friction.

How Accurate Is Nearby Demographic Data?

When done correctly, radius-based demographic estimates use area-weighted interpolation from Census block groups — the smallest publicly available demographic geography.

This means estimates are:

• More precise than ZIP-code averages
• Transparent and reproducible
• Suitable for screening, planning, and comparison

They are not a substitute for a full appraisal, but they are extremely useful for early-stage analysis and decision-making.

Who Benefits Most From Demographics Near an Address?

While anyone can find this data useful, it is especially valuable for:

• Real estate investors and analysts
• Commercial brokers and developers
• Property managers
• Urban planners and consultants
• Journalists covering housing and development

If your work depends on understanding who lives nearby, this data belongs in your toolkit.

Final Thoughts

Demographics near an address provide a clearer, more realistic picture of neighborhoods than traditional boundary-based statistics. For real estate professionals, they bridge the gap between raw data and real-world decision-making.

As demand grows for faster, more flexible neighborhood insights, radius-based demographic tools are becoming less of a luxury — and more of a necessity.

If you need custom maps or tailored demographic summaries for a project, you can contact us at help@supertool.org.

The post Demographics Near an Address: What Real Estate Professionals Actually Need appeared first on Super Tool.

Large Excel files fail for predictable reasons: too many rows, too many columns, excessive formatting, embedded objects, and inconsistent structure across sheets. When files grow past a certain size, they become slow to open, impossible to email, and fragile to work with.

We’ve recently released major improvements to our Excel Downsizer tool, focused on three goals:

1. Faster processing
2. Better control over messy spreadsheets
3. Much broader support for real-world Excel files

The tool is available here:

Reduce Excel File Size Online — upload, select columns, and download a smaller file.

Below is a brief overview of what’s new and why it matters.

Faster Processing for Large Files

The updated version processes large spreadsheets significantly faster, especially when:

• files contain hundreds of thousands (or millions) of rows
• users export only a subset of columns
• files need to be split into multiple outputs

Internally, the tool now avoids unnecessary parsing and works more efficiently with selected data ranges. This reduces both processing time and memory usage, which matters most for files that previously stalled or crashed Excel altogether.

For users, the result is simple: large files download faster and fail less often.

Sheet Selection for Multi-Sheet Workbooks

Many Excel files contain multiple sheets, often with wildly different structures. Previously, this could lead to confusion or failed exports.

The tool now automatically detects all sheets and allows you to:

• select exactly which sheet you want to work with
• ignore irrelevant or auxiliary sheets
• downsize one sheet without touching the rest

This is especially useful for files where only one worksheet contains the data you actually need.

Header Row Selection (for Non-Standard Files)

Real Excel files frequently break assumptions. Headers are not always on row 1.

The updated tool allows you to explicitly choose the header row, making it far more reliable when working with:

• exported system reports
• legacy spreadsheets
• files with title rows, notes, or blank padding at the top

Once the header row is selected, all exports preserve column meaning correctly — even when rows are filtered or files are split.

More Robust Handling of “Messy” Excel Files

One of the biggest improvements is reliability across poorly structured or heavily formatted spreadsheets.

The tool is now much more likely to succeed when files include:

• excessive formatting and styles
• embedded images, shapes, or drawing objects
• pivot tables or other Excel artifacts
• inconsistent column naming or empty headers

Exports are always values-only, which removes bloat while preserving the actual data. This dramatically reduces file size and improves compatibility with downstream tools.

Broader Input Coverage

The downsizer is designed to work not just with clean XLSX files, but with a wide range of real-world inputs, including:

• XLSX and CSV
• heavily formatted Excel documents
• spreadsheets generated by other software systems

The emphasis is not on perfect formatting fidelity, but on getting usable data out, reliably.

Why This Matters

Most Excel file size problems are not caused by “too much data” — they’re caused by everything else wrapped around the data.

By letting you:

• select only the columns you need
• limit rows precisely
• split large exports into manageable files
• remove formatting and objects automatically

the tool makes Excel files easier to open, share, analyze, and archive.

Try the Updated Tool

If you regularly deal with large or problematic Excel files, the updated tool is designed to handle the cases that usually fail.

Reduce Excel File Size Online

(upload → select → download)

As always, we continue to improve reliability and performance based on how people actually use spreadsheets in the wild — not how they’re supposed to look.

The post What’s New: A Faster, More Reliable Way to Downsize Large Excel Files appeared first on Super Tool.

The HEIC format is based on the High Efficiency Image File (HEIF) standard, which uses advanced compression to preserve clarity while reducing file size. HEIC photos can include deep color, transparency, and multiple images in a single file, making them more powerful than traditional JPGs. However, the lack of universal support means many users eventually need to convert HEIC files to more compatible formats.

If you have trouble opening a HEIC file on Windows, older macOS versions, or certain websites, converting the file is often the simplest solution. JPG provides maximum compatibility, PNG offers lossless quality, and WebP delivers excellent compression for modern browsers. Converting HEIC files makes them easier to share, upload, edit, and archive.

The easiest way to convert HEIC files is by using an online tool that runs directly in your browser (that’s why we made this HEIC conversion tool!). This avoids installing software and works on any device. Upload your HEIC photo, choose your preferred format, and download the converted file instantly.

Choosing the right format depends on how you plan to use the image. JPG is ideal for everyday sharing, PNG is best for preservation and transparency, and WebP is useful for web design and modern compression. For printing or documents, converting HEIC to PDF is often the most convenient option.

With the growing popularity of HEIC, understanding how the format works—and how to convert it—ensures your photos remain easy to use wherever you share or store them.

The post Why Your iPhone Uses HEIC (and How to Easily Convert HEIC to JPG or PNG) appeared first on Super Tool.

Upload your PDF, select the area you want to adjust, and replace colors with precision. It’s a focused, fast tool designed purely for recoloring.

Try the PDF Color Editor →

What This Tool Does

The PDF Color Editor is not a text editor or layout tool. It won’t let you rewrite text or move images around. Instead, it’s built for one thing only: changing colors inside a PDF.

You can:

• Replace one color with another across the full document.
• Recolor only selected regions of a page.
• Target colors inside logos, diagrams, or background areas.
• Use fuzz tolerance to catch near-matching shades.
• Eyedrop a color directly from the PDF preview for exact replacement.

Change Colors in Just One Part of a PDF

The standout feature is the ability to draw a selection box and recolor only what’s inside.

Examples:

• Change a single word’s color — make “DUE TODAY” stand out in red.
• Recolor a logo — switch from old brand colors to your new palette.
• Update a watermark or stamp — darken it without altering the rest of the document.
• Target sidebars or headers — recolor design elements without affecting the main content.

Selections can be applied to one page, copied across multiple pages, or used globally across the whole PDF.

Replace Colors in Images or Graphics

Since many PDFs include embedded images or scanned pages, the editor also works on those.

You can:

• Replace background fills in charts or diagrams.
• Swap all reds in a scan for orange or pink.
• Adjust a shaded header bar to a new brand color.
• Make faint grey text darker without changing black text elsewhere.

This is all done by color replacement — not by drawing new objects or editing text.

Why Focus Only on Colors?

Because many people don’t need a full-blown PDF editor — they just need to fix colors. Traditional converters recolor everything, but that can ruin scans or images. The PDF Color Editor gives you targeted control without the clutter of other editing tools.

FAQs

Can I use this to edit text or move images?

No. This tool is only for replacing or changing colors, not for editing content or layout.

Can I change just one word or logo color?

Yes. Draw a selection box around it and choose your new color.

Can I recolor images inside a PDF?

Yes. The Replace Colors mode lets you map one color in an image to another.

Does this work with scanned PDFs?

Yes. Scans are treated like images, and the eyedropper helps you target exact tones.

Is it free?

First download is free. Explore with the example document without limits.

Other Color Tools on SuperTool

If you need other kinds of PDF color conversions:

• PDF Color Changer – simple full-document recoloring (great for printing without black ink).
• Convert Color PDFs to Black and White – turn any PDF into greyscale or pure B&W.

Start Recoloring Your PDFs

The PDF Color Editor is the simplest way to replace or modify colors inside a PDF — whether across the whole file or in just one region. Nothing extra, just color changes.

Open the PDF Color Editor →

The post PDF Color Editor – Replace Colors or Recolor Select Regions appeared first on Super Tool.