Drop a PDF, get it back guaranteed at or under 100 KB — pages recompressed locally in your browser and sharing one byte budget. Nothing is uploaded.
A 100 KB cap on a PDF that already exists is the hard version of the problem: the file was made somewhere else — a scanning app, a phone camera export, an office suite — and the portal wants the same document at a tenth of the size. PixFit re-renders every page locally (with pdf.js, Mozilla’s PDF renderer, fetched from this site the first time you drop one — the document never leaves your browser), re-encodes each page as a JPEG, and reassembles a PDF whose total is guaranteed at or under 100 KB. The pages share the byte budget: a mostly-blank page hands its spare bytes to a dense one instead of wasting them.
100 KB comfortably holds one or two clean document pages; a five-page contract will come out readable but visibly compressed, and a ten-page photo-heavy file won’t survive the squeeze — the per-page results table shows exactly what each page got, and pages that can’t fit their share are listed, not silently mangled. If text comes out soft, the honest lever is the Max edge field: document pages rarely need more than 1200–1600 px of width to stay legible, and a smaller sharp render usually beats a big starved one.
The output contains pictures of your pages. Text stops being selectable and searchable; links, form fields and digital signatures don’t survive. For a scanned PDF nothing real is lost — it was pictures already. For a text-born PDF only do this when the upload form cares about bytes, not text. Every page keeps its exact printed size, and the original’s document metadata (author, creation tool) is not copied over. Password-protected files need the password removed first. Several PDFs? Drop them together — each one is recompressed to the cap on its own row, ZIP download included; or tick Combine into one PDF to merge them (images can join too) into a single file under the same 100 KB. Roomier caps: 200 KB, 300 KB, 500 KB. Starting from a photo instead of a PDF? That’s the image-to-PDF page.