Public release record

What’s new.

Notable versions are listed here, each linked to its GitHub release. Releases that only change how the app is built are left out, so the newest entry may sit a version or two behind the current one — which is always what the download page gives you. Image Resizer also checks for updates automatically, so improvements are available from inside the app.

Download for Mac — free
0.1.31 Latest notes

Markup that earns its keep

Web Export produced the right files but described them conservatively. This series makes the generated markup do the work: several formats offered as a choice, a sizes value that matches your layout, a link preview, and structured data. See what it produces.

  • More than one format per run. AVIF and WebP written alongside a fallback every browser reads, emitted as a <picture> so each browser takes the best one it understands and downloads nothing else. AVIF appears where macOS can write it.
  • A sizes value that matches your page. Choose full width, half, a third, a quarter or a fixed column. Previously every image claimed to fill the viewport, which made browsers fetch the largest file even on a narrow column — and a ladder of widths then saved nothing.
  • Link previews. An extra crop at the shape social platforms use, with og:image tags carrying the real dimensions of the file written. It stays out of the responsive set, being a different picture rather than a smaller one.
  • Cropping around the subject. Fill & Crop and the link preview both find what a picture is of and crop around it instead of the middle, recognised on your Mac. Images with no clear subject are centre-cropped as before.
  • Structured data. The credit and licensing fields are written into the page as schema.org markup as well as into the files, since page markup survives a CMS that re-encodes images on upload.
  • Loading priority. The first image of a batch loads immediately and the rest lazily. Every image was previously marked lazy, which delays the one a page is measured on.
  • Snippets as JSX. React ignores srcset and fetchpriority, so HTML pasted into a component quietly lost its responsive behaviour. Choose JSX and the attributes are written the way React reads them.
0.1.21

Web Export

Images can now be prepared for a website without leaving the app. Turn on Web Export to produce several widths in one pass, URL-safe filenames, sRGB colour, rights metadata, a manifest with ready-to-paste markup, and alt text suggested on your Mac. See what it produces.

  • Responsive sizes. One source, several widths. Sizes larger than a given original are skipped rather than upscaled.
  • URL-safe filenames. IMG_4821 Café Sign.jpg becomes cafe-sign-800.jpg. Accents, Arabic and Han transliterate; camera prefixes and their frame numbers are removed together.
  • Rights metadata. Creator, copyright, credit and licensing URLs written as IPTC and XMP.
  • Manifest and markup. manifest.json and a snippet.html with a complete srcset, intrinsic dimensions and lazy loading.
  • Alt text on device. Recognition and phrasing both run locally. Images the recogniser is unsure about are left undescribed rather than guessed at, and every suggestion needs review before publishing.
  • AVIF output, on Macs running macOS 26, where the system can write it. The format is hidden where it is unavailable.
  • Target file sizes now apply to HEIC and AVIF as well as JPEG and WebP.

Fixed. A WebP resized from a wide-gamut source could be written as sRGB pixels still carrying the original Display P3 profile, which browsers rendered over-saturated. Applying a preset with an empty width or height no longer clears that field. The description rule for using a suggested alt text is now selectable.

0.1.9

A new visual identity

The app now carries the same warm cream, orange and black identity as the website.

  • New stacked-image and resize-arrow app icon
  • Complete macOS icon set for crisp rendering from the Finder to the Dock
  • Matching website logo, favicon and social preview
0.1.8

August 3 release series

Six focused releases expanded the app from RAW support into a more complete batch-resizing workflow.

  • 0.1.8 — Optional KB or MB targets for JPEG and WebP, using the highest quality that fits.
  • 0.1.7 — Editable filename suffixes with remembered preferences and collision-safe numbering.
  • 0.1.6 — Fit, Fill & Crop, Long Edge and Percentage resize modes.
  • 0.1.5 — Protection against accidentally enlarging smaller images, enabled by default.
  • 0.1.4 — Completed source batches clear automatically while the summary and output location remain.
  • 0.1.3 — Canon CR3 files use their embedded colour-rendered previews with correct orientation.
0.1.2

Initial release series

The first public builds established native Apple Silicon resizing, local processing and automatic update delivery.

  • 0.1.2 — The first follow-up update.
  • 0.1.1 — Initial public release.

Get the latest release.

Download for Mac — free