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Kraken.io
What it is
Kraken.io is an image optimization service with a browser interface and API access. The browser tool can optimize, compress, resize, and convert images without code. It accepts ZIP archives containing multiple images and returns a processed archive. Supported formats include JPG, PNG, WebP, GIF, SVG, AVIF, HEIC, and PDF. Kraken.io lists both compression modes, batch processing, metadata controls, and image resizing; the maximum upload size is 32. Each account starts with 100 MB of testing quota, and no credit card is required to sign up. The pricing note lists a free plan and paid service from $5/mo. Paid plans set a monthly image quota measured by unprocessed source image data, with additional usage charged per GB according to the plan. Listed plans range from Micro at 500 MB of images per month to Enterprise at 60 GB per month. Customers can choose monthly or yearly billing and cancel, downgrade, or upgrade without a contract. Official plugins are available for WordPress and Magento.
For and against
For
- Browser tool works without code
- Accepts ZIP archives for batch processing
- Supports JPG, PNG, WebP, GIF, SVG, AVIF, HEIC, and PDF
- 100 MB testing quota starts with each account
- No credit card required to sign up
Against
- Maximum upload size is 32
- Monthly quota is measured before processing
- Additional usage is charged per GB
The verdict
Kraken.io offers browser-based image processing alongside API access, with batch handling and a broad listed format set. Its free testing quota has a defined size, and paid-plan usage is based on source image data.
Who it suits
Kraken.io may suit people who want to optimize, resize, or convert images through a browser, as well as developers using its API. ZIP batch processing and the listed CMS plugins may fit image workflows involving multiple files or those platforms.
Plans and prices
Free
100 MB testing quota
Read 28 Sep 2026 · kraken.io
Micro
500 MB images per month · $5 per additional GB
Read 15 Oct 2026 · kraken.io
Micro
500 MB images per month · $5 per additional GB
Read 15 Oct 2026 · kraken.io
Basic
2 GB images per month · $4 per additional GB
Read 15 Oct 2026 · kraken.io
Basic
2 GB images per month · $4 per additional GB
Read 15 Oct 2026 · kraken.io
Advanced
5 GB images per month · $3 per additional GB
Read 15 Oct 2026 · kraken.io
Advanced
5 GB images per month · $3 per additional GB
Read 15 Oct 2026 · kraken.io
Premium
15 GB images per month · $2 per additional GB
Read 15 Oct 2026 · kraken.io
Premium
15 GB images per month · $2 per additional GB
Read 15 Oct 2026 · kraken.io
On the record
- API access
- Yeskraken.io · read 20 Sep 2026
- API authentication
- API requests use HTTPS POST with a JSON auth object containing an API key and API secret.kraken.io · read 15 Oct 2026
- API credentials
- Each plan permits up to ten sets of API credentials for separate applications or sites.kraken.io · read 15 Oct 2026
- ZIP batch processing
- The web interface accepts ZIP archives with multiple images and returns a processed archive.kraken.io · read 28 Sep 2026
- Batch processing
- Yeskraken.io · read 20 Sep 2026
- Billing frequency
- Customers can choose monthly or yearly billing.kraken.io · read 28 Sep 2026
- Billing terms
- Terms state subscriptions are billed in advance monthly or yearly and are non-refundable.kraken.io · read 15 Oct 2026
- Browser workflow
- The web interface accepts drag-and-drop images, ZIP archives and format conversion without coding.kraken.io · read 15 Oct 2026
- Changelog
- Plugin version 3.0.3 added 64 locales and a site-savings panel; version 3.0.2 tightened permissions and improved quota and error messaging.wordpress.org · read 15 Oct 2026
- Company size and headquarters
- LinkedIn lists Kraken.io as privately held, headquartered in Berlin, with 2–10 employees.linkedin.com · read 15 Oct 2026
- Compression modes
- The product provides lossy, lossless and expert optimization modes.kraken.io · read 15 Oct 2026
- Signup card requirement
- No credit card is required to sign up.kraken.io · read 28 Sep 2026
- Current status
- On October 15, 2026 the status page reported all listed systems operational and no incident reported that day.status.kraken.io · read 15 Oct 2026
- External storage
- API results can be stored directly in Amazon S3, Rackspace CloudFiles, Microsoft Azure and SoftLayer storage.kraken.io · read 15 Oct 2026
- File-size limits
- The free interface allows 1 MB files while PRO plans allow files up to 32 MB.kraken.io · read 15 Oct 2026
- Founder
- Crunchbase identifies Karim Salman as CEO and co-founder and lists the company as an active private Berlin, Germany business.crunchbase.com · read 15 Oct 2026
- Free account
- Every account starts with 100 MB of testing quota and does not require a credit card.kraken.io · read 15 Oct 2026
- Free testing quota
- Every account starts with 100 MB of testing quota.kraken.io · read 28 Sep 2026
