Compress PDF to 300 KB
Bring an ID proof, address proof or short scanned bundle under 300 KB for an upload form. Your file is compressed on this device and never uploaded.
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- Runs in your browser
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- Runs on your deviceEvery tool works directly in your browser. No files are uploaded.
- Your privacy mattersYour files never leave your device, so there's nothing for us to store.
- No limitsUse any tool as much as you need. No daily caps, no waiting.
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How to compress a PDF to 300 KB
- Add the PDF. Drop it on the box or choose it. You can add several; each is compressed on its own.
- Leave the limit on 300 KB. Fit under a size is already selected. Type another number in Other size if your form differs.
- Compress, check and download. The bar shows the new size against the limit. Open the result and zoom in before uploading it.
When a form asks for 300 KB
The best-known 300 KB limit is the online PAN application. Protean's (NSDL) instructions for Form 93 and Form 94, checked on 10 October 2026, ask for supporting documents (proof of identity, address and date of birth) scanned at 200 DPI in black and white, as PDF/A or JPEG, at most 300 KB per page. The photo and signature have their own limits; the PAN card photo resizer makes both.
300 KB is roomy for one or two pages and workable for three to five. In our tests a three-page colour scan kept its page images at 80 DPI, while ten pages only fitted once they were turned into images at 50 DPI.
What reaches 300 KB, and what doesn't
We ran sample A4 scans through this page in Chrome. Your files will differ, since busy pages and colour need more space, but the pattern holds: page count and colour decide whether 300 KB is realistic.
| Sample file | Before | After | How |
|---|---|---|---|
| 3-page colour scan, 300 DPI | 3.60 MB | 216 KB | Photos recompressed to 80 DPI |
| 5-page colour scan with a photo, 200 DPI | 3.21 MB | 178 KB | Photos recompressed to 60 DPI |
| 5 phone photos of pages, 12 MP | 13.54 MB | 208 KB | Photos recompressed to about 65 DPI |
| 10-page colour scan, 200 DPI | 6.63 MB | 265 KB | Pages re-rendered at 50 DPI |
When nothing fits, the tool keeps the smallest version and says it couldn't reach the limit, rather than quietly handing you an unreadable file.
If it won't fit
Scan as the form asks. For PAN, that means black and white at 200 DPI. A black-and-white page starts far smaller than a colour one, and often needs little or no compression.
Crop phone photos to the page. Five 12-megapixel phone photos made a 13.5 MB PDF in our test. The desk around the paper is wasted space; a scanning app's document mode crops it before you save.
The PDF/A question. This tool saves a standard PDF, not a certified PDF/A file. If an upload is refused for that reason, the PAN form also takes JPEG, and Compress image to 200 KB brings a page photo well under the limit.
Other sizes
Frequently asked questions
Is 300 KB the limit for PAN card documents?
Yes, for applications through Protean (NSDL): supporting documents can be up to 300 KB per page, scanned at 200 DPI in black and white, as PDF/A or JPEG. That's what the instructions said when we checked on 10 October 2026. Check the site you apply through, as rules change.
How many pages fit in 300 KB?
In our tests, three colour pages kept their images at 80 DPI and five at 60 DPI; ten pages only fitted at 50 DPI, where small print is hard to read. Black-and-white scans fit more pages than colour ones.
Why does the limit show as 293 KB under my file?
The tool aims at 300,000 bytes so the file passes whether a site counts 1 KB as 1,000 or 1,024 bytes. File sizes on this page are shown the way Windows shows them (1 KB = 1,024 bytes), so 300,000 bytes reads as 293 KB.
Is my document uploaded anywhere?
No. Proofs of identity and address are exactly the files you shouldn't hand to an unknown server. Here the PDF is compressed by your own browser and never leaves the device.