Image tools / Kraken.io
Kraken.io
Kraken.io Image Optimizer and Compressor for JPG, PNG, WebP, GIF, SVG, AVIF, HEIC and PDF.
Where it stands
3.8 / 5
Signals score
Not a hands-on test
Based on 2 of 3 signals
- Website health4 / 5 · weight 50%
Measured from the tool's public website
- Facts stated4.2 / 5 · weight 30%
How many of the five facts the tool's own pages state
Built only from what we can measure or quote without using the tool. How ranking works
Rank by signals
We have not run our own hands-on test on Kraken.io yet. Facts checked 2026-11-01. How tests work
Should you use Kraken.io?
A quick read built only from what the tool's own pages state and from our tests, not from opinion. Facts checked 2026-11-01.
A good fit if…
- You want a free option. It states: “Every account starts free with 100 MB of testing quota. No credit card required to sign up.”
Check first
- It needs an account.
- The free option has limits: “Every account starts free with 100 MB of testing quota. No credit card required to sign up.”
Does: Compress image
Measured signals
4 / 5 · measured 2026-11-08Read automatically from Kraken.io's public website: how reliable, secure, private and open the site is. This is not a test of how well the tool does its job. How this is measured
- Reliability5 / 5The page answered and finished downloading in 377 ms.
- Security2.8 / 51 of 5 protective headers set (strict-transport-security).
- Privacy3 / 52 third-party tracking services found: Google Analytics, Amplitude.
- Transparency5 / 5Links a privacy policy; links a pricing page.
Community feedback
Not enough discussion yet: 1 classified comment from 1 thread. We need at least 12 from 2 threads.
- Positive
“Would love to use something like Kraken as we'll be processing a TON of images, but 8MB limit would be a deal breaker.”
Read in the thread
Threads: Show HN: Kraken.io – image optimization service (2013, 59 comments)
- Free tier
- Every account starts free with 100 MB of testing quota. No credit card required to sign up.
- Paid plan
- Monthly / yearly in USD: Micro $5 / $50 (500 MB per month), Basic $9 / $90 (2 GB), Advanced $19 / $190 (5 GB), Premium $39 / $390 (15 GB), Enterprise $79 / $790 (60 GB). Yearly includes two months free. Overage per extra GB $5, $4, $3, $2, $1 respectively. Euro prices not shown.
- Signup
- An account is required (free account needs no credit card).
- Watermark
- Not stated.
- Where files go
- The privacy policy does not say where images are processed or stored or how long. It says only: we keep your information only so long as we need it to provide Kraken.io.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy. Prices and limits change; check the tool before you rely on them.
Get an email if Kraken.io changes
We check its official pages every week. If they change, we tell you, so you can see if the price or limits moved. No other email, and one click stops it.
Compare with: Img2Go, TinyPNG, agathox image tools
Are you the maker of Kraken.io? Link to this page
Copy this into your site. The link goes to this page, and it does not change any score.
<a href="https://agathox.com/tools/kraken-io">Kraken.io on agathox: compared and tested</a>
Tasks and scores
- Compress imageNot tested yet
Similar tools
Top signals in Compress image.
Something wrong or out of date on this page? Tell us and we will fix it.