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Convert

Batch convert images to PNG, WebP, JPG, AVIF, and TIFF with quality you control—per file or for the whole queue. Preview, strip metadata, and ZIP download locally in your browser.

Free · private · batch-ready

Convert images with batch export

Upload many photos at once, pick PNG, JPG, WebP, AVIF, or TIFF per file or for the whole queue, tune quality, and download a ZIP—everything runs locally in your browser.

Compare original vs converted on a fixed canvas, strip metadata for safer sharing when you need to, or keep file data when formats line up. No account required.

How to use the converter

Upload images

Choose multiple files or add more later. The strip on the right shows the queue; the active image has a checkmark.

Pick format & quality

Use the dropdown and slider, and check Apply to all when every file should share the same recipe.

Preview & download

Compare original vs converted, then save the current image or download all as a ZIP.

Supported file formats

Load common browser image types. Exports include PNG, JPEG, WebP, AVIF (where supported), and uncompressed RGB TIFF.

  • PNG
  • JPEG / JPG
  • WebP
  • AVIF
  • TIFF
  • GIF

Key features

Per-image or global format and quality, live preview, ZIP batch download, and advanced color and metadata controls.

  • 1024×768 preview

    A centered white canvas letterboxes each selection so you can judge conversion at a glance.

  • Five output formats

    PNG, JPG, WebP, AVIF (browser-dependent), and software-encoded RGB TIFF.

  • Apply to all

    Sync format or quality across the batch, or keep independent settings per thumbnail.

  • Original vs converted

    Toggle preview above the canvas before you commit to a download.

  • ZIP export

    Download the active image or bundle every converted file into one archive.

  • Local processing

    Conversion runs on your device; files are not uploaded to OneFrameLab for this tool.

Common use cases

  • Batch format changes

    Turn a folder of mixed PNGs and JPEGs into WebP or AVIF for the web in one pass.

  • Archival TIFF

    Export lossless RGB TIFF for print pipelines or tools that expect uncompressed strips.

  • Privacy-first sharing

    Strip metadata before export so location and camera data do not travel with the file.

  • Grayscale exports

    Switch color mode to grayscale for documents, scans, or stylized monochrome outputs.

Pro tips

  • AVIF appears only when your browser can encode it; otherwise pick WebP or JPEG for small lossy files.
  • TIFF here is uncompressed RGB—great for compatibility, larger than PNG for some images.
  • Keeping metadata only applies when the output type matches the source and no grayscale or quality change is applied.
  • Very large images may take a moment to encode; wait for dimensions before batch ZIP.

Frequently Asked Questions