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Smaller files — with a Safe mode that keeps text selectable.
On your device. No watermark. No sign-up.
This tool is processed locally with JavaScript inside your browser tab. The document is not uploaded, stored or seen by a server, which makes it suitable for contracts, invoices, CVs and medical or financial records.
Safe keeps everything that makes a PDF a PDF: selectable text, links, bookmarks and form fields. It rebuilds the file structure and drops leftover objects, which usually saves 5–30%. If the file is already tidy, Safe tells you it could not make it smaller instead of handing back the same file.
Light redraws every page as a 150 DPI image. That is sharp enough to read and print, and it shrinks scanned documents and photo-heavy files the most. The text becomes part of the picture, so you can no longer select or search it.
Strong does the same at 110 DPI with lower image quality. Use it when the file only needs to be read on a screen, for example in a chat app.
Target size asks for a limit in KB and works towards it for you. Pick this one when a website tells you the exact maximum.
Choose Target size and move the slider to the limit you need, anywhere from 50 KB to 2,000 KB. The tool first tries 150 DPI at good quality. If the result is still too big, it lowers the image quality and resolution and tries again, up to six times, and stops at the first version that fits.
If six attempts are not enough, the tool tells you the smallest size it reached instead of handing you a file that misses the limit. At that point the document has too much on each page for that size. Split it into two files, remove pages you do not need, or check whether the form accepts a larger upload.
There are ready-made pages for the most common limits, including 100 KB, 200 KB and 1 MB, listed under Guides below.
Upload forms in India often cap documents at a few hundred KB, and the limit changes from portal to portal. Read the number on the form itself and compress to just under it, so a rounding difference does not get the upload rejected.
For a CV, start with Safe. Recruiters and applicant tracking systems read the text in your CV, and the image modes turn that text into a picture. If only an image mode gets the CV under the limit, run the result through OCR PDF afterwards so the text becomes searchable again.
For scanned certificates, mark sheets and ID copies, Light or Target size is the right choice. A scan is already a picture, so nothing is lost, and these files shrink the most.
Gmail accepts attachments up to 25 MB in total, and larger files are sent as a Google Drive link instead. If your PDF is just over that, Safe or Light is usually enough to attach it directly.
WhatsApp sends documents up to 2 GB, but a large file is slow to send on mobile data and slow to open on the other phone. Strong mode makes a PDF that opens quickly and is easy to read on a phone screen.
A PDF made straight from Word or another app is mostly text, and text takes very little space. Safe can only remove what is wasted, so the saving may be small. Turning such a file into page images can even make it bigger, which the result shows as a plus sign next to the percentage.
Scans and photo-heavy files are the opposite. They are large because every page is a big image, and the image modes can cut them by well over half. If you want to know what is taking up the space before you choose a mode, read the guide on why a PDF gets so big.
Compression runs inside this browser tab using PDF.js and pdf-lib. The PDF is read from your disk, processed in memory and saved back to your downloads. It is never sent to a server, so it is safe to use on contracts, bank statements, medical reports and ID documents.
There is no file size cap set by a server. The practical limit is your device memory: most computers handle files of 100–200 MB, and phones handle less. After the first visit the tool also works offline.
Yes. There is no account, no daily limit, no trial and no watermark on the compressed file.
No. The file is compressed inside your browser and never leaves your device. After your first visit the tool works offline too.
Safe mode does not change how the pages look. Light renders pages at 150 DPI and Strong at 110 DPI, which lowers image detail and turns text into part of the image. For reading on a screen the difference is usually hard to see.
Choose Target size, set the slider to 100 or 200 KB, and press Compress PDF. The tool keeps trying lower settings until the file fits, up to six times.
Use Safe mode. It is the only mode that keeps selectable text, links and form fields. If Safe is not enough, compress with an image mode and then run OCR PDF to add a searchable text layer back.
The file was mostly text, and drawing text-only pages as images takes more space than the text did. Use Safe mode for these files, or keep the original.
Remove the password first with Remove Password, using the password you already have, then compress the unlocked copy. You can add a password again afterwards with Encrypt PDF.
Yes. Any compression changes the bytes of the file, so a certified digital signature will no longer validate. Compress the document before it is signed, or send the signed original.
The tool compresses one PDF at a time. To send several documents as one small file, merge them with Merge PDF first and then compress the merged file.
Yes. It runs in Chrome, Safari and other mobile browsers. Very large or long PDFs can be slow on a phone because everything is processed on the device.
Last updated 12 November 2026
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