Don't take our word for it — turn off your Wi-Fi. Docexp keeps working. A site that runs with the network off cannot be uploading your files anywhere.
Make your file fit what the form is asking for
Exact pixel size, an exact KB range — including the minimum, which is what actually gets uploads rejected and which almost every other tool ignores. Plus 115 free tools to merge, compress, and convert PDFs, photos, and documents. All in your browser; nothing is ever uploaded.
Fix a photo for an upload form →Compress PDF to exact size (KB)
Shrink a PDF down to at or under a target file size in KB by re-rendering pages as compressed images — for portals with strict upload limits ('form must be under 300KB'). Text will no longer be selectable afterward.
Government and exam portals love hard limits — 'the upload must be under 300 KB'. Most compressors give you a vague quality slider and leave you guessing; this one takes the exact KB target and binary-searches the quality until the file genuinely lands under it.
How Compress PDF to exact size (KB) works
- Drop your file into the tool, or click to browse.
- Everything runs in your browser — no upload, no server, no waiting.
- Download your result straight to your device.
Good to know: To reach tight targets it re-renders each page as a compressed image, so text in the output is no longer selectable or searchable. It also refuses to produce an illegible blur: if a target is too small to hit while keeping the document readable, it tells you honestly and gives you the smallest legible version instead.
Common questions
Why can't I select the text after compressing?
Hitting a small exact size means flattening each page to an image. That's the trade-off for a strict byte limit — if you need selectable text, choose a more generous target.
What happens if my target is impossibly small?
Docexp won't silently wreck the document. If it can't reach the size while keeping pages legible, it says so and hands you the smallest readable result.