Compress PDF to 100KB, 200KB, 500KB — in your browser

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Your file is processed on your device and is never sent to any server.

How to compress a PDF to an exact size

Government job portals, exam application forms, and scholarship sites often cap PDF uploads at a fixed size like 100KB, 200KB, or 500KB. CorePDFTools compresses your PDF to a target size while keeping text legible — all in your browser, so your certificates and IDs stay private.

Upload your PDF. Drop your PDF into the box above or browse to it.

Pick a target size. Choose 100KB, 200KB, 300KB, or 500KB — match the limit your portal requires.

Download the result. The tool applies progressively stronger compression until your file fits, then lets you download it.

Tips for hitting small size limits

Compress to just under the portal's limit rather than far below it, so you keep as much quality as the rules allow. Scanned documents compress best; a one- or two-page grayscale scan can usually reach 100KB. Very long or full-colour documents may not reach a tiny target without removing pages or scanning in grayscale at a lower resolution first.

Common uses

Government job and exam application portals

Many Indian government and exam sites cap uploads at 100KB or 200KB per document. Compress your certificate, photo, or signature to fit.

Visa and scholarship forms

International application portals often enforce strict per-file sizes; target just under the stated limit.

Any upload field that rejects your file as 'too large'

When a portal refuses a file for exceeding its size limit, compressing to the exact cap is usually the fix.

Which approach to use

Targeting a size versus general compression: the regular Compress PDF tool lets you pick a quality level; this tool instead works backwards from a size you choose (100KB, 200KB, 300KB, 500KB) and compresses progressively until the file fits. Use this one whenever a portal gives you a hard size limit.

Troubleshooting

It can't reach my target size. A long or full-colour document may not compress that small while staying readable. Upload only the required page using Split PDF, or scan in grayscale at a lower resolution first.

The text became hard to read. You're targeting a very small size for an image-heavy document. Try the next size up if the portal allows it, or start from a cleaner, higher-contrast scan.

My document has several pages. Multi-page documents are harder to fit into tiny limits. Consider whether the portal needs all pages, and extract only what's required.

Frequently asked questions

Can every PDF be compressed to 100KB?

Not always. One or two scanned pages usually can; long or text-only documents may not reach a very small target without removing pages.

Will the text still be readable at 100KB?

For scanned documents, text stays legible at sensible targets. The tool keeps real text selectable and only reduces image detail.

Is this safe for ID and certificate uploads?

Yes — the compression happens in your browser, so your documents are never uploaded anywhere.

Why do portals use such small limits?

Many were built with limited storage years ago and never relaxed the limits. Compressing to fit is usually the only option.

Why do Indian government portals use 100KB limits?

Many were built years ago with limited storage and bandwidth, and the limits were never relaxed. Compressing to fit is usually the only option.

Will a 100KB file be accepted as good quality?

For scanned documents at sensible targets, yes — text stays legible. The tool keeps real text selectable and only reduces image detail.

Can I compress a photo to 100KB here?

This tool is for PDFs. If you have a JPG, convert it with JPG to PDF first, or resize the image before converting.

Compress PDF to a target size