Android scanner apps save every page as a high-resolution colour JPEG, so a short scan is already 10 MB. That size blocks email attachments and slows uploads. GekiPDF rewrites the file with Ghostscript presets that drop resolution while keeping text readable. Pick Light (~200 DPI), Recommended (~150 DPI), or Extreme (~96-120 DPI) — each shrinks your file without touching the text layer.
Upload a scan up to 50 MB; the tool processes it in about one second for a 16-page document. Metadata is stripped automatically, and no watermark is added. You get 40 conversions per hour per IP address, and the original file is deleted after an hour. For a typical 300 DPI colour page (about 1.2 MB), dropping to 150 DPI greyscale cuts it to roughly 150 KB per page.
Frequently asked questions
Will compressing my Android scan make the text blurry?
The Recommended preset keeps text sharp at ~150 DPI, suitable for reading on screen. Extreme may show slight pixelation on zoom, but fine for archiving or emailing.
How long does it take to compress a scanned PDF?
A 16-page scan takes about one second. Larger files up to 50 MB process within a few seconds, depending on your connection speed.
Does this remove the searchable text from my scan?
No, the text layer is preserved. The tool only downsamples the bitmap images, so you can still copy or search text if your scanner created an OCR layer.
Do it in the full tool
Open Compress PDF for all options, or jump straight to another step below.
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