Local by default
Selected image bytes, filenames and watermark text are not sent to BatchMint servers.
Private batch image processing in your browser.
Process product images without uploading them.
Batch convert, compress, resize, watermark, rename and export images in one local browser workflow.
Free browser workspace · No account required · Current batch limit: 20 images
Product content reviewed July 23, 2026
A real image batch is more than one compression setting
A folder of product or web images often needs several connected decisions: correct the orientation, choose a useful maximum width, decide whether transparency must remain, select an output format, add a consistent watermark, create predictable filenames and inspect the result before publishing. Repeating those steps in separate upload-based tools takes time and makes the data boundary difficult to follow.
BatchMint keeps the sequence in one browser workspace. The current pipeline identifies each file, corrects JPEG orientation, resizes, applies an optional watermark, encodes, renames and exports. Applicable steps can be disabled, but their order remains fixed so a preset produces a repeatable result.
- 1. Add a modest batch.Choose up to 20 JPEG, PNG or static WebP files and remove individual mistakes without rebuilding the batch.
- 2. Choose destination settings.Set format, maximum width, optional target size, background, watermark and filename template.
- 3. Process in local workers.Per-file progress reports reading, resize, watermark, encoding and target-size search milestones.
- 4. Review and export.Compare the selected before/after result, then save individual files, a supported folder or ZIP volumes.
Popular local image workflows
One fixed workflow
Resize, watermark, encode, rename and export in a predictable order.
Reusable settings
Save presets and brand kits locally in your current browser profile.
Choose a format for the destination
No image format is smallest or highest quality for every source. Keep the original file and test a representative result in the system that will publish it.
| Format | Useful for | Important limit |
|---|---|---|
| JPEG | Photographs and conventional product images | No transparency; transparent pixels need a background |
| PNG | Logos, screenshots and lossless graphics | Can be large for detailed photographs |
| WebP | Modern web images with optional transparency | Older desktop publishing tools can be uneven |
| AVIF | High-compression web delivery | Slower encoding and less uniform non-browser support |
What stays in the browser
- Selected image bytes and decoded pixels
- Original filenames and watermark text
- Processing results and local logo files
- Presets and brand kits saved in this browser profile
What the site still requests
The browser downloads the static site, styles, fonts, service worker and codec assets. Public explanatory pages can load approved analytics, advertising and consent resources. The processing workspace is noindex and does not load the AdSense site script.
Read the complete privacy boundaryMeasured evidence, with limits
BatchMint publishes deterministic fixtures, encoder versions, settings and exact output bytes. In the current opaque fixture, JPEG quality 82 was smaller than WebP quality 82. In the simple transparent fixture, OxiPNG level 2 was smaller than WebP quality 82. These results show why a universal “WebP is always smaller” claim would be misleading; they do not predict every photograph.
Product documentation
Practical image guides
Current limits are part of the product
- Maximum 20 input images per batch
- No deployed HEIC/HEIF, PSD, RAW, TIFF, video or animated-image input
- No cloud collaboration or cross-device preset synchronization
- No direct upload to Shopify, Etsy, Amazon or another marketplace
- A requested target byte size cannot be guaranteed for every source
About this project
BatchMint is an independently developed browser software project. Product claims are checked against the current build and tests, marketplace guidance links to official sources, and corrections can be sent to the published contact address.