Get scanned and photo PDFs under an attachment limit. Pick resolution and quality; the new size shows immediately.
🔒 This file never leaves your device — nothing is sent to a server
Scans, photo-heavy handouts and collections of screenshots. Those carry a large image per page, and re-rendering each page as a JPEG at a sensible resolution typically cuts 70–90%. A text PDF exported from a word processor is already small; this method will not shrink it and may make it larger.
Each page becomes a picture, so text can no longer be selected, searched or copied. Links and bookmarks are dropped. A scan is a picture anyway, so nothing is lost; for a document you need to search, keep the original.
150 DPI at quality 72 gives 200–400 KB per A4 page and reads well on screen and in ordinary printing. Use 200 DPI for contracts with small print, 100 DPI for messaging. Below quality 60, text edges start to smear.
If stamp or highlighter colors do not matter, grayscale saves another 20–40% at the same quality. Keep color for colored stamps and charts.
Start at 150 DPI · 72 and check the size. If still too big, lower quality to 60, then drop to 100 DPI. Beyond that, splitting the document in two with Split PDF beats degrading quality further.
No. Rendering the pages and assembling the new PDF happen entirely in your browser.
Not this tool. Large text PDFs usually carry full font files several times; re-exporting from the original program with font subsetting is the right fix.
Each page is rendered, so 100 pages can take tens of seconds. Progress is shown.