Shrink image- or scan-heavy PDFs locally - strength selectable, the file never grows. No upload.
Running locally on your device ...
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Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
Scanned contracts or photo-heavy PDFs quickly grow to several megabytes - too big for an email attachment. This tool finds the embedded images inside the PDF and re-stores them at a lower resolution and quality; text, vector graphics and fonts are left untouched. So the file gets noticeably smaller while the searchable text layer is preserved.
Pick the strength: light for more quality, strong for the smallest file. A keep-smaller guard makes sure the result is never larger - if compression would not help, you get your original back unchanged.
How much a PDF shrinks depends almost entirely on its images: a high-resolution photo scan can be cut down sharply, while a pure text or vector PDF barely budges - here the tool honestly reports little or no saving and returns the original. Mind the trade-off too: stronger levels downsample the image resolution, so fine detail and sharpness visibly decline. When in doubt, start with “medium” and check whether the result stays sharp enough for your purpose.
| Input formats | |
|---|---|
| Output format | |
| Batch processing | No |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Recompresses the embedded images of a PDF (lossy) and leaves text, vectors and fonts untouched - the searchable text layer is preserved. Embedded photo images are processed, both JPEG and photographic PNG/Flate rasters; line art and screenshots with few colours are kept lossless instead, as are images with transparency/mask, JPEG2000, CCITT fax and CMYK. A pure text or vector PDF has no such images and is returned unchanged. Open password-protected PDFs first with "Unlock PDF".
No, compression happens entirely locally in the browser.
No, a keep-smaller guard otherwise returns the unchanged original.
The method shrinks embedded images. Pure text or vector PDFs contain none, are already compact and are returned unchanged.
Yes. Only the embedded images are recompressed; text, vectors and fonts stay unchanged, so the text layer remains searchable and selectable.
Light shrinks photos to at most 2200 pixels on the longest side at JPEG quality 0.72 - barely visible, moderate savings. Medium (1700 pixels, quality 0.58) is the best start for email attachments. Strong (1200 pixels, quality 0.46) gives the smallest file; fine detail visibly suffers. Nothing is ever upscaled.