Szymdows CAPTCHA review
A free, privacy-minded CAPTCHA widget for small sites, with limited challenge types.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Szymdows CAPTCHA is a web widget for protecting forms and other website interactions. Developers add a single JavaScript file, render the widget, then verify its single-use token on their own server. Its visual challenges ask people to drag a shape or tap tiles, while movement characteristics contribute to behaviour-based scoring. The product is aimed at solo developers and small sites that want a lightweight CAPTCHA and can handle server-side verification; it is less suited to teams that need audio challenges or a broad range of challenge formats.
Installation is deliberately simple: the frontend does not require npm or build tools, and it supports multiple widgets on one page. Touch, mouse, and keyboard input are supported, with automatic resets and light, dark, or automatic themes. The documented flow keeps verification on the site's server and uses tokens that expire after 60 seconds and can only be used once. The frontend is MIT-licensed, but the verification backend is proprietary, so the open-source element does not extend to the full verification service.
Privacy is a notable part of the product's positioning: its documentation says it makes no cookies, fingerprinting, or third-party tracking calls. Support is through community and documentation. The offering is described as free, but the published information does not establish hosted-service terms or usage limits; buyers should assess whether the proprietary backend fits their deployment needs. Choose it for a straightforward, privacy-minded widget on a small site. Consider alternatives if audio access, more challenge variety, or a fully open-source verification stack is important.
Szymdows CAPTCHA pros and cons
- Where it wins
- Install with one JavaScript file, without npm or build tools
- Supports touch, mouse, keyboard, and multiple widgets per page
- Documents no cookies, fingerprinting, or third-party tracking calls
- Where it doesn't
- Offers visual challenges only; no audio challenge
- Verification backend is proprietary, unlike the MIT-licensed frontend
- Challenge selection is limited to dragging shapes and tapping tiles
Szymdows CAPTCHA fact sheet, pricing and score →
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