Fibonacci ToolBox

Resize image

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

Resize image options
Images
Drop files here or click to browse
Images (incl. HEIC) · up to 25 MB each, 30 max · paste works too
px
px
%
Runs in the background · stops after 180s
Results appear hereAdd your files, adjust the options and press Run.
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Image converter

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

Open tool files

Compress image

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

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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