What Is BIRME and What Can It Do?

Updated

BIRME is a free, browser-based bulk image resizer for people who need to resize many images quickly without installing software or uploading private files to a server. You drop in JPG, PNG, WebP, or AVIF files, set dimensions and crop behavior, then export the results as a ZIP, individually, or into a folder. It is best suited to desktop use — the site itself notes it works best on a desktop computer and points phone users to separate apps.

What BIRME actually does

The core job is batch resizing: set a width, a height, or both, with automatic ratio locking so images don't distort. Beyond that, the same workspace handles several related tasks:

  • Smart crop with automatic focal point detection, so the important part of each image stays in frame when the aspect ratio changes
  • Custom crop — draw your own crop region on each image individually
  • Format conversion across JPG, PNG, WebP, and AVIF, with per-format quality sliders
  • Batch rename using a pattern with sequential numbering (for example, a prefix plus a starting number)
  • Watermarks — text or image, with adjustable position, size, and opacity
  • Borders — a colored border with adjustable thickness
  • Background removal with AI, exporting transparent PNG or WebP
  • AI super-resolution to enlarge small images by 2x, 3x, or 4x

A high-quality resize engine (pica) is available as an option for sharper output, and the site warns that this method may crash in some browsers.

Privacy and how processing works

Everything runs in your browser — the site states there is no upload and no installation, and describes itself as privacy-focused. That matters if you're resizing client photos, internal documents, or anything you'd rather not send to a third-party server. Settings are saved automatically and restored on your next visit, so repeat jobs don't require reconfiguring from scratch.

Who it fits, and when to look elsewhere

BIRME is a good match if you have a folder of images that all need the same treatment — product photos for a listing, blog images that must hit a width limit, or a mixed-format set you want standardized to WebP. The workflow is: drop files, set width/height and crop mode, pick output format and quality, optionally rename or watermark, then download as ZIP.

It is a weaker fit in a few situations. On a phone, the site directs you to its separate apps rather than the main tool. If you need pixel-level retouching, layer-based editing, or color grading, a full editor is the right category — BIRME is a batch utility, not an image editor. And if your task is specifically about file size for the web, the quality sliders and format choice are the levers to use, but the tool won't tell you a target file size; you'll need to check output sizes after export.

Quick practical notes

  • Supported output formats are JPG, PNG, WebP, and AVIF; quality is set per format.
  • You can save directly to a folder, download files one by one, or grab everything as a ZIP.
  • "Do not resize" is an option if you only want to convert, rename, or watermark.
  • The site reports being used by 50,000+ monthly users and serving images since 2013, with a last update noted as 2026-10-15.

For a first run, start with a small batch of three or four images to confirm the crop and quality settings look right before processing hundreds.