Bulk Image Compressor & WebP / AVIF Converter

Compress, resize and convert images in bulk: give it image URLs, get smaller WebP, AVIF, JPEG or PNG files and a per-file report of the bytes saved.

What you get

• Output as WebP, AVIF, JPEG or PNG, lossy or lossless.
• Optional resize to a maximum width and/or height (aspect ratio kept, never enlarged).
• Transparency is kept for WebP, AVIF and PNG; for JPEG it is filled with a background color you choose.
• Metadata (EXIF including GPS, embedded AI prompts) is dropped by default; photo rotation is applied to the pixels first, so nothing ends up sideways.
• A report row per image: size before and after, percent saved, dimensions before and after, and a link to the file.
• A result is only delivered, and only charged, when it is actually smaller than the original.

Use cases

• Shrink image sets for websites, shops and galleries (Core Web Vitals, page weight).
• Convert PNG / JPEG libraries to WebP or AVIF.
• Make fixed-size previews and thumbnails of a long list of URLs.
• Batch-reduce AI-generated PNGs, which are often very large, before delivery.

Quick start

Keep the example URLs and press Start. Optimized files appear in the run's Key-value store; the dataset lists the savings.

Input

{
  "imageUrls": ["https://raw.githubusercontent.com/ianare/exif-samples/master/jpg/gps/DSCN0010.jpg"],
  "outputFormat": "webp",
  "quality": 80,
  "maxWidth": 1600
}

Field	Default	Notes
imageUrls	(required)	Up to 2,000 direct links. JPEG, PNG, WebP, BMP and still GIF. Animated files are skipped.
outputFormat	webp	webp, avif, jpeg or png.
quality	80	1-100, for lossy WebP / AVIF / JPEG.
lossless	false	Lossless WebP / AVIF. Best for screenshots and flat-color illustrations.
maxWidth / maxHeight	0	0 = no limit.
keepMetadata	false	Keep EXIF and the color profile.
backgroundColor	#ffffff	Fill for transparent areas when writing JPEG.
maxImageSizeMb	30	Larger source files are skipped with an error.
maxConcurrency	4	Parallel downloads.

Output

{
  "url": "https://raw.githubusercontent.com/ianare/exif-samples/master/jpg/gps/DSCN0010.jpg",
  "status": "optimized",
  "source_format": "jpeg",
  "output_format": "webp",
  "bytes_before": 161713,
  "bytes_after": 118522,
  "saved_percent": 26.7,
  "width_before": 640, "height_before": 480,
  "width_after": 640, "height_after": 480,
  "optimized_file_key": "00002-DSCN0010.webp",
  "optimized_file_url": "https://api.apify.com/v2/key-value-stores/<id>/records/00002-DSCN0010.webp"
}

status is optimized, not_smaller (the result would not be smaller: no file written, not charged) or error.

Limits

• Inputs over 100 megapixels, animated images and non-image files are reported as errors.
• AVIF encoding is slower than WebP; large batches take longer.
• Each site's robots.txt is checked before downloading. Use it on images you are allowed to process.

Pricing

Pay per event: you are charged once per image that came out smaller. Failed downloads and not_smaller results are free.

Related Actors

• Image Metadata Remover: strip EXIF, GPS and AI prompts without re-encoding.
• Duplicate & Similar Image Finder: remove repeated images before you compress the rest.
• Stable Diffusion Prompt Extractor: read the prompt and settings embedded in AI images.