Imresizer PDF logoImresizer PDF

Clean up your scanned PDF

Fix crooked scans, strip the background shadow, and switch to crisp black & white — all client-side. Nothing you drop here ever leaves your device.

Upload Document Images

Drag & drop files here, click to browse, or use your camera. Supports multiple files — JPG, PNG, WEBP, HEIC.

100% in your browserNo uploadsNo signupUnlimited files

100%

Processed in-browser

4

Adjustable corner points

<3s

Average cleanup time

0

Files ever uploaded

How to clean a scanned PDF

Four steps, no account, no upload — the whole thing runs in your browser.

1

Drop your scan or photo

Add a PDF or image of your scanned document. Works on phone, tablet, and desktop.

2

Adjust the corners

Drag the four corner handles to trace the page edges — we'll perspective-crop it flat and straight.

3

Remove background & pick color mode

Strip the shadow behind the page, then choose original, grayscale, or black & white.

4

Download your clean PDF

Save the result instantly, or send it straight into the compressor to hit a target size.

Everything you need to clean a scanned document

A complete, free scan-cleanup tool that runs entirely in your browser — no software to install, no account to create.

Straighten crooked scans

Drag the four corners to match the page edges and we perspective-crop it flat — no more skewed, trapezoid photos of your documents.

Remove background & shadow

Strip the desk, hand, or shadow around a phone-scanned page so only the clean document remains.

Rotate & flip in one tap

Sideways or upside-down scan? Rotate 90° or flip instantly until the page reads the right way up.

Original, gray, or black & white

Switch color mode to match what you need — full color for photos, grayscale for readability, or pure black & white for crisp text scans.

100% private & secure

Every adjustment happens locally in your browser. Nothing is ever uploaded — open your network tab and verify it yourself.

Hands off straight to compress

Done cleaning? Send the result straight into the compressor to hit a target size before you email or upload it.

Fix perspective, not just rotation

Phone scans are rarely just crooked — they're skewed. Corner adjustment perspective-crops the page so every edge lines up straight, not just rotated.

Your files never leave your device

There are no uploads — cleanup runs fully client-side in your browser. Open your network tab while you use it and confirm nothing is sent anywhere.

No signup, no watermark

Clean as many scans as you want — no account, no daily cap, and the output never carries a watermark.

Who cleans up scanned documents here

A straight, shadow-free scan looks professional wherever you send it. Here's where it helps most.

Phone-scanned documents

Turn a quick phone photo of a form or receipt into a flat, straight, document-quality page.

Contracts & signed paperwork

Remove desk shadows and crooked angles from signed contracts before you file or forward them.

IDs, receipts & forms

Clean up ID cards, receipts, and government forms so text stays sharp and legible.

Old paper scans

Improve faded or yellowed paper scans by switching to black & white for a cleaner, more readable result.

Before compressing

Clean the scan first, then hand it off to compress it down to 200 KB or any size a portal requires.

Archiving & record keeping

Produce consistent, straight, clean-looking scans before you file documents away for the long term.

More free PDF tools

Everything runs in your browser — private, free, and no signup, just like the scan cleanup tool.

Loved by renters, bookkeepers & coordinators

Thousands of people clean up a scanned document here every day. Here's what a few of them say.

My phone scan of a lease was crooked with a shadow across it. Two minutes here and it looked like it came off a real scanner.
Alicia R. · Tenant
Switching to black & white made an old faded receipt scan actually readable again — and it never left my laptop.
Devon P. · Bookkeeper
I clean the scan, then compress it to 200KB for the portal. Two tools, zero uploads, done in under a minute.
Farah N. · HR Coordinator

Frequently asked questions

Does this tool upload my document anywhere?

No. Every adjustment — corner cropping, background removal, rotation, and color mode — runs locally in your browser. Nothing is sent to a server. You can open your browser's network tab while using the tool to verify no file leaves your device.

What file types can I clean up?

You can drop a PDF or a photo (JPG/PNG) of a scanned document. The tool works the same way for a proper scan or a quick phone photo of a page.

How do I straighten a crooked scan?

Drag the four corner handles so they sit on the actual edges of the page. The tool perspective-crops the image using those four points, which straightens skewed as well as simply rotated scans.

Can I remove the shadow or background behind my scan?

Yes. The background removal step strips out the desk, hand, or shadow surrounding the document, leaving just the clean page.

What's the difference between grayscale and black & white mode?

Grayscale keeps a full range of gray tones, which works well for photos or shaded content. Black & white pushes every pixel to pure black or white, which is best for text-heavy scans where you want maximum contrast and the smallest file size.

What happens after I clean up my scan?

You can download the cleaned PDF right away, or send it straight into the compressor to shrink it to a target size like 200 KB before you email or upload it somewhere.