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Many government and university portals reject uploads above 100 KB. This tool keeps lowering image quality until the file fits — on your device.
No upload. No watermark. No sign-up. Every tool mentioned here runs inside your browser.
Open Compress PDF, choose the Target size mode and set the slider to 100 KB. The tool re-encodes pages as images and steps the quality down until the output fits.
If it cannot reach 100 KB, the PDF is extremely dense (usually a full-colour scan). In that case split it first, or scan at a lower DPI next time.
Target-size mode rasterises pages, so the text stops being selectable and searchable. That is usually fine for uploads — the portal just needs a readable file.
If you need to keep the text layer, use Safe mode instead. It only removes structural redundancy, so the shrink is smaller (5–30%) but the text stays selectable.
Not always. It tries six quality steps. Very dense scans may bottom out above the target — the tool tells you the best size it reached instead of pretending.
No. Compression happens in your browser tab.
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