Comparisons
How we compare — including where we lose.
We make one of the tools on this page, so every comparison names the case where the other one is the better buy, and every claim comes with a way to check it yourself in about a minute.
The question all of these are judged on
When you cover something sensitive and export the file, is the data gone from it — and is a copy of the original still on disk? Almost every comparison of these tools scores capture features. That is the wrong scoreboard for anyone whose screenshots contain faces, customer records or credentials, because a tool can win on capture and still hand you a file with a recoverable card number in it.
For all four side by side in one table, read the four-way roundup .
Common questions
What is the best screenshot redaction tool for Windows?
It depends on what you are hiding. For occasional contact details, the built-in Windows 11 Snipping Tool is enough and free — its Quick Redact finds email addresses and phone numbers automatically and covers them with solid blocks. For the widest free capture and annotation feature set, ShareX. For documentation work, and for automatic detection of personally identifying data including faces, Snagit 2025 and its Smart Redact. For screenshots containing credentials rather than contact details, or that arrive in folders rather than one at a time, a tool with API-key detection and batch redaction over a directory — which is what SnapShield AI is for. Whichever you pick, pair the detection with an opaque fill or black bars rather than a blur.
Is blurring enough to hide sensitive information in a screenshot?
No. Blur is a filter, not a deletion: every input pixel keeps a weighted contribution to the output, so the original detail is attenuated rather than discarded. Small high-contrast text — card numbers, tokens, terminal output — is exactly the case where it survives, sometimes legibly and often after a simple levels adjustment. Use an opaque fill, or a pixelation large enough that detail below the block size cannot affect the result, and always export to a flattened format such as PNG.
Which screenshot tools detect sensitive data automatically?
More than there were. Snagit 2025 and later includes Smart Redact, which detects addresses, credit cards, dates, emails, faces, IP addresses, phone numbers, social security numbers and URLs. The Windows 11 Snipping Tool detects email addresses and phone numbers through OCR. SnapShield AI detects faces with an on-device model plus email, phone, credit card (Luhn-validated), IBAN (mod-97), JWT, API keys, national IDs, IP addresses and bank details. The lists differ in a way worth checking against your own material: Snagit covers dates and URLs and we do not, we cover API keys, JWTs and IBANs and it does not. ShareX and Greenshot have no content detection at all — every region you cover in those is one you spotted yourself.
Do these tools keep an unredacted copy of my screenshot?
Often, yes, and it is the most commonly missed risk. Snagit keeps every capture in its library by design. ShareX keeps originals in its History and screenshots folder. Windows saves raw captures to Pictures\Screenshots when auto-save is on. A perfectly redacted export can sit beside an unredacted original on the same disk. SnapShield AI keeps no capture library; auto-save is off by default and, when enabled, stores the composited image with redactions applied rather than the base image.
Can redacted text be recovered from an exported image?
If it was blurred or drawn semi-transparently, frequently yes. If it was covered by a fully opaque fill and the file was flattened on export, no — there is no signal left to recover. The way to check any tool is to redact a screenshot of small high-contrast text, export to PNG, reopen the exported file in a different viewer, and push brightness, contrast and levels to the extremes. Anything that reappears was never redacted.
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