benchmark · JPEG quality benchmark

JPEG Quality Benchmark

Use this table when you need a JPEG output and want a practical starting quality.

Benchmark notes

JPEG quality results

Quality	Output size	Change from q100	Useful first test	Caution
100	1.37 MB	Baseline	Archival export check	Large file
90	526 KB	-62%	High quality web photo	Still large for strict upload limits
80	303 KB	-78%	General web image	Check fine texture
70	200 KB	-86%	Upload limit trial	Check edges and gradients
60	143 KB	-90%	Small JPEG target	Artifacts can show

ImgShrink generated four repeatable samples with sharp: a photo-style gradient, a UI screenshot, a transparent graphic and a flat color illustration.

Each output was encoded with the stated format and quality setting, then measured by byte size before being rounded for the table.

Photo sample: 1600x1067 pixels. Screenshot sample: 1365x768 pixels. Transparent sample: 512x512 pixels. Flat graphic sample: 1200x800 pixels.

WebP used quality 78 for the cross-format table, AVIF used quality 50, and JPEG baselines used quality 90 unless a quality row states otherwise.

Quality 90 cut the sample to 526 KB.

Quality 70 was 200 KB on the same dimensions.

Quality 60 gave the smallest JPEG but needs visual checking.

These values are benchmark results for the sample set, not a promise for every uploaded file.

Real images vary by noise, detail, transparency, dimensions, browser encoder and the target platform's accepted formats.

No. They are measured sample results that help choose a first setting to test.

No. They use generated samples and browser-style encoding assumptions.

Updated October 8, 2026 · Source checked: 2026-10-08

Source type: Project benchmark model and browser compression tests
Review scope: Checked the reference ranges against sample categories such as photos, screenshots and mixed web graphics.
Use with this limit: Numbers are planning ranges, not guaranteed output for every image or browser version.

Compare WebP quality 90, 80, 70, 60 and 50 on the same photo-style sample.

Compare measured JPEG, WebP and AVIF output sizes for photo, screenshot, transparent and flat graphic samples.

Compress JPG photos locally in your browser with quality and width controls. No uploads, accounts or watermarks.

Compress JPG, PNG, WebP and AVIF images in your browser. Reduce image file size privately with adjustable quality and instant downloads.

Convert JPG images to WebP in your browser for smaller web-ready files. No upload required.