Compress PDF to 100 KB
Need to compress a PDF to 100KB or under for a portal upload limit or email attachment? This tool targets 100 KB entirely in your browser.
Tool processing runs in your browser — your files/inputs are not uploaded to our servers for processing. Ads (if shown) load separately and do not receive your tool files.Advertising · Details
Quick answer
TryQuickImg compresses PDFs toward 100 KB with on-device scan mode. Not uploaded to our servers for processing.
Can a PDF actually reach 100 KB?
It depends entirely on what is inside it. A text PDF — one generated by a word processor rather than scanned — is mostly font instructions and can sit well under 100 KB across several pages without any compression at all. If yours is that kind of file and it is oversized, the weight is usually one embedded image or an unsubsetted font, not the text.
A scanned PDF is a different proposition. Each page is a photograph, and 100 KB divided across even a two-page scan leaves about 50 KB per page. Reaching that means rasterizing at a low resolution, and small print is the first thing to go.
If the document has to stay readable and 100 KB is genuinely the cap, scan or export fewer pages per file rather than pushing the quality down further. An illegible document that meets the size limit still fails.
Scan mode or Keep text?
This is the only decision that really changes the result, and it depends on what your PDF already contains.
- Keep text leaves the text layer alone and compresses the images around it. The document stays selectable, searchable and copyable. The reduction is smaller, which is fine whenever the target has headroom.
- Scan mode rasterizes each page into an image and compresses that. It reaches much smaller files, and it is the right choice for documents that were scanned or photographed in the first place — they have no text layer to preserve.
The trap is using Scan mode on a document that was born digital. You get a smaller file and lose the ability to search it, select a reference number from it, or have a screen reader read it aloud. Try Keep text first and only fall back to Scan mode if the target demands it.
Other targets: 200 KB · 500 KB · 1 MB · 2 MB · 5 MB · PDF for email
Frequently asked questions
How do I compress a PDF to 100 KB?
Open Compress PDF with the 100 KB target, drop your file, use Scan mode for scanned docs, and download. Processing runs in your browser — files are not uploaded to our servers for processing.
Is my PDF uploaded?
No. TryQuickImg runs pdf.js and pdf-lib in your browser only.
Will text stay selectable?
Scan mode rasterizes pages (best for size on photo/scans). Use Keep text on the main tool when you need selectable text and a lighter shrink.