Image Compression & Resizing

Compress image

Build a deterministic compression plan for one JPEG/PNG/WebP: quality slider, real export dimensions, EXIF orientation normalization, output bytes and an honest savings report. When output is larger it only says "no savings".

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Inputs and parameters

• image — Image file
• quality — Quality (1–100)
• targetWidth — Target width (px, blank = unchanged)
• lockAspect — Lock aspect ratio
• backgroundColor — Transparency background (#RRGGBB)
• outputBytes — Measured output bytes (optional, verifies "no savings")

Real example

JPEG 2000×1000, 1,800,000 bytes, quality=75, outputBytes=2,100,000
→ {"output":{"bytes":2100000,"format":"jpeg"},"savings":{"saved":false,"statusText":"no savings","percent":null,"message":"output is 300000 bytes larger than input"}}

Limits and failure handling

One image, 20 MiB / 24 MP budget enforced up front; no upload, no batch. No real codec is wired, so output is a JSON plan (downloadableImage=false) and must not be used as a compressed image; real encoding is untested. AVIF is disabled.

FAQ