Compress PDF to 300 KB
Need a PDF under 300 KB? Drop it below and FileTinker compresses it to 300 KB or smaller right in your browser — nothing is uploaded. The target is preset to 300 KB, so just add your PDF and download.
More presets
Jump to another preset — each opens its own page ready to go:
How to compress a PDF to 300 KB
- Drop your PDF into the box above — it’s read straight into your browser, never uploaded.
- The target is already set to 300 KB; FileTinker tries several quality settings until the file fits at or under it.
- Check the result and download. If 300 KB is too small for this PDF, you’re told the closest size it reached.
About compressing a PDF to 300 KB
Compressing a PDF to 300 KB works by rebuilding its pages as images and lowering the image quality and resolution until the file fits at or under 300 KB. FileTinker tries several settings and keeps the best-looking one that still fits — handy for upload forms and email limits that cap PDFs at 300 KB.
Everything runs in your browser, so your PDF never leaves your device. One trade-off: rasterising turns pages into images, so selectable text and bookmarks aren’t kept — best for scanned or image-heavy PDFs. A very text-heavy document may not reach 300 KB while staying readable, in which case you’re shown the closest size.
Frequently asked questions
How do I compress a PDF to 300 KB?
Drop your PDF into the tool above, leave the target at 300 KB, and press Compress. FileTinker shrinks it to 300 KB or under in your browser, then you download the result.
Will compressing to 300 KB reduce quality?
Smaller targets need more compression, so some sharpness is traded for size. FileTinker keeps the best quality that still fits under 300 KB; if 300 KB is very small for the document, it tells you the closest size it could reach.
Is my PDF uploaded anywhere?
No. Compression happens entirely in your browser — your PDF never leaves your device and nothing is stored on a server.
Will the text still be selectable after compressing to 300 KB?
No — to reach 300 KB, pages are rasterised into images, so selectable text and bookmarks aren’t preserved. Keep your original if you need searchable text; this is best for scanned or image-heavy PDFs.