Privado browser-based imagen diff

Imagen Comparar & Difference Checker

Comparar two imágenes side by side, overlay them, or highlight pixel-level differences for screenshot review, design QA, and visual regression checks.

No imagen subirWorker-based local analysisJPG · PNG · WebP · AVIF · GIF · BMP

A

Original / Version A

B

Revised / Version B

Cómo funciona

Find imagen differences in three steps

Añadir two imagen versions, elegir a comparison mode, and tune sensitivity to quickly locate changed areas.

  1. 01

    Añadir two versions

    Elegir the original and revised imagen by dropping archivos or browsing your device.

  2. 02

    Elegir a comparar mode

    Use side-by-side, overlay, or difference heatmap to inspect changes.

  3. 03

    Locate and exportar

    Tune sensitivity, review the changed area, and descargar a diff imagen.

Formatos compatibles and modes

Accepts JPG, JPEG, PNG, WebP, AVIF, GIF, and BMP. Different dimensions are drawn onto Version A’s comparison canvas; originals are never uploaded.

JPGPNGWebPAVIFGIFBMP

Casos de uso habituales

  • Website and app screenshot regression
  • Design, poster, and exportar QA
  • Checking imagen calidad después compression or conversión
  • Reviewing scanned document versions

FAQ

Preguntas frecuentes

How should I set difference sensitivity?

The default value of 8 works well for most screenshots. Lower values catch subtle color changes; higher values help ignore compression noise.

Can I comparar imágenes with different dimensions?

Yes. Version B is drawn into Version A’s dimensions and the page tells you when alignment was applied. For strict pixel regression, use matching dimensions first.

Are my imágenes uploaded or saved?

No. Archivos are read through navegador object URLs, and analysis plus diff generation happen on this device. Temporary URLs are released when you leave the page.

Why does this page not use FFmpeg or MediaBunny?

This is a pixel comparison task, not vídeo container or audio/vídeo encoding. Canvas plus a Worker is lighter and better suited to comparing imágenes in the navegador.

Can I descargar the difference imagen?

Yes. Después analysis, elegir Descargar diff imagen to exportar a PNG heatmap. Your two source imágenes remain unchanged.

Tus imágenes permanecen en tu dispositivo

Imagen decoding, alignment, pixel analysis, and diff rendering todo happen in your navegador. The pixel loop runs in a Worker so large imágenes do not block the interface.

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