Compress a PDF to 100 KB
100 KB is a demanding target — the kind an old upload form or a strict portal imposes. This tool is preset to aim for it: drop your PDF and it lowers quality until the result slips under 100 KB, or tells you the smallest it could honestly manage. Runs entirely in your browser; nothing is uploaded.
Drop PDF files here or click to select
Preset target: 100 KB
Can every PDF reach 100 KB?
No — and it's worth saying plainly. A one- or two-page document with mostly text usually can, even after rasterising. A 30-page report or a photo-heavy scan often can't get to 100 KB while staying legible; the ink on the page has a minimum cost. When your file can't reach it, the tool gives you the smallest legible version it produced and shows the real size, rather than quietly returning something still over the limit. If you're close but not under, try splitting the document or aim at 500 KB instead.
Getting the most out of a 100 KB budget
- Fewer pages help most. If only page 1 matters, extract it first, then compress.
- Already a scan? Rasterising a scan again loses little — 100 KB is often reachable for a single scanned page.
- Text-only original? The lossless pass may already be tiny; you might not need to sacrifice quality at all.
FAQ
How do I compress a PDF to under 100 KB for free?
Drop it into the tool above — it's preset to a 100 KB target and works down a quality ladder until it fits, all in your browser with no upload and no signup.
The result is 130 KB, not 100 — why?
Because 100 KB wasn't reachable for that document without making it unreadable. The status line shows the smallest achievable size. Reduce the page count or accept the slightly larger file.
Is the text still selectable?
At a 100 KB target the pages are almost always rasterised, so text becomes an image — not selectable. That's the trade for hitting an aggressive size. Need selectable text? Aim higher, e.g. 500 KB.