Fibonacci ToolBox

Compress image

Shrink photos for the web: re-encode, optionally downscale, strip metadata, and see the savings.

Compress image options
Images
Drop files here or click to browse
Images (incl. HEIC) · up to 25 MB each, 30 max · paste works too
%

Lower is smaller. 70–80 is usually indistinguishable.

WebP and AVIF are typically 25–50% smaller than JPEG.

px

Downscale larger images. Empty to keep dimensions.

Runs in the background · stops after 240s
Results appear hereAdd your files, adjust the options and press Run.
See all

Image converter

Convert between PNG, JPEG, WebP, AVIF, GIF, BMP, TIFF and ICO — HEIC photos from iPhones included.

Open tool files

Resize image

Resize to fit, fill-and-crop, exact dimensions or a percentage, in bulk.

Open tool files

EXIF viewer & remover

See what a photo reveals — camera, time, GPS location — and download a clean copy.

Open tool files

Favicon generator

One image in, a complete favicon set out: .ico, PNG sizes, Apple touch icon, web manifest and HTML.

Open tool files