How do I resize without stretching?

Enable Maintain aspect ratio in the resize panel, set width or height, and apply. The editor keeps proportions unless you unlock both axes intentionally.

Can I resize several images?

Batch compress on the homepage handles multiple files. For per-image edits, work through the editor one file at a time or edit then return to the compressor tab.

Resize Image Online — Crop & Scale Free

JPEG compression (canvas → PDF) 80%

Lower = smaller file, more soft/blocky pages. Higher = sharper pages, larger file. 100% = least JPEG compression (still JPEG, not lossless).

More compression Balanced No compression (100%)

Render zoom (pdf.js supersample) 150%

Pages are drawn larger than the output width, then downscaled before JPEG. Higher zoom = sharper text, slower + more memory (up to 500%). 100% = no supersample.

100% (faster) 150% 500% (max detail)

AVIF → JPEG bridge — when supported, try canvas→AVIF→JPEG per page and keep the smaller JPEG (AVIF still isn’t stored inside the PDF). Retry stronger if needed — if the first pass isn’t smaller, run one stronger pass (lower width + JPEG quality).

Resize Image

🔍 Interactive Quality Inspection (Slide to Compare)

Compression Complete!

Crop

Resize

Transform

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Frequently asked questions

Install FileShrinkr