Choose a PDF and this tool compresses it towards under 500 KB (500,000 bytes max target). It first tries a lossless rebuild; if that is not enough it re-renders pages at step-by-step lower resolutions until the target is met — and if the target is genuinely unreachable for your file, you get the smallest version it could make, with the status line saying so honestly. Runs fully in your browser — nothing is uploaded.
An upload form says “PDF, max 500 KB”? This tool squeezes your file under the cap — and tells you plainly if the cap cannot be met.
100% free · No sign-up · No daily limits · No watermarks · Processed in your browser — files never leave your device
Compress a PDF towards under 500 KB: lossless rebuild first, then a measured rendering ladder that stops at the first fit — the cap most application and visa portals actually impose.
A 3.4 MB property deed scan must go through a 500 KB land-registry upload. It fits at 462 KB on an early ladder step — seals and signatures still sharp enough to read comfortably.
Measurement drives everything: a lossless rebuild is weighed first; rendering steps follow at descending resolution and JPEG quality (starting around 150 DPI), each weighed, stopping at the first under 500,000 bytes. Most real documents fit in the first few steps, which is why 500 KB results usually look close to the original.
It is the classic compromise between legibility and storage — most of the hard-cap forms on the web use 100, 200, 500 KB or 1 MB, and this family covers each with its own preset.
Usually little: fitting early ladder steps keep ~120–150 DPI, which reads well on screen and prints acceptably for forms.
No — if nothing beats your original meaningfully, the honest smallest result is what downloads, and the status explains. Your original is never modified regardless.
Only via the lossless path. The status line states which path your result took.
No — all compression is local to your browser.