Compress PDF to 500KB
Automatically finds the best quality that fits under 500KB. Your file never leaves your device — everything runs in the browser.
Drop your PDF here
or click to choose a file · up to hundreds of MB
Choose PDF fileWhere a 500KB limit shows up
Government & official submissions
Permit applications, tax documents, and official web portals enforce strict attachment caps. A PDF under 500KB sails through most of them.
Email attachments
Large attachments bounce depending on the recipient's mail server. Keeping each PDF under 500KB means multi-file emails always go through.
Job applications & recruiting portals
Resume, cover-letter, and portfolio uploads on hiring sites are often capped around 500KB. Get your file under the limit before the deadline rush.
How it works
- 1Select your PDF or drag & drop it.
- 2The target size is pre-set to 500KB — just hit the compress button.
- 3The tool searches for the best quality that fits under 500KB, then you download the result.
Frequently asked questions
Will the file really end up under 500KB?+
The tool steps image resolution down and keeps the best-looking result that fits under 500KB. If a document simply can't go that low (e.g. it's all text and fonts with nothing left to shrink), you get the smallest achievable file instead.
Is my file uploaded to a server?+
No. Compression runs entirely in your browser via WebAssembly — the file never leaves your device. Safe even for sensitive contracts and records.
Does compressing to 500KB hurt quality?+
500KB is a fairly comfortable target — most documents compress with little to no visible quality loss. Only very image-heavy files see mild resolution adjustments.
Which PDFs compress well to 500KB?+
Scans, photos, and graphics-heavy PDFs shrink the most. Already-optimized text PDFs have little left to remove, so the original may be returned unchanged.