Does this page keep transparency?

Yes. PNG export with lossless mode preserves alpha channels — useful for logos and UI assets.

Should I use PNG or JPG for photos?

Photos are usually smaller as JPG. Use PNG for graphics, text, or any image that needs a transparent background.

Can I convert PNG to JPG instead?

Use the Compress JPG tool or the main compressor, select JPG as output, and upload your PNG.

PNG Compressor Online — Optimize PNG 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).

Compress PNG

🔍 Interactive Quality Inspection (Slide to Compare)

Compression Complete!

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Frequently asked questions

Install FileShrinkr