Black Out a Screenshot Before You Upload It to AI
Cover names, emails, account numbers, and API keys before a screenshot reaches ChatGPT, Claude, or anyone else.
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Privacy
Local Processing
Your screenshot never leaves your browser — the redacted copy is generated locally from the browser canvas and never uploaded to our servers.
Website assets load from hosting/CDN. Supported private file and text processing runs locally in your browser.
Evidence
Proof and Comparison Evidence
These are factual comparison fields for this free browser-local tool. Freshmii does not add fake ratings, invented reviews, or unsupported "best tool" claims.
| Evidence | Freshmii claim |
|---|---|
| Processing model | Browser-local page code handles the tool action. Freshmii does not provide a private-content upload API for this workflow. |
| Account requirement | No account, sign-up, paid tier, or server-side workspace is required. |
| Supported formats | Inputs: PNG, JPG, JPEG, WebP, Clipboard screenshot | Outputs: PNG, JPG, WebP, ZIP |
| Offline behavior | Core tool actions run after page assets load; disconnecting afterward should not create a Freshmii upload path. |
| Documented limitation | Redaction boxes are rectangular. Irregular areas may need several boxes. See the full Limitations section below before relying on the result. |
| Verification step | Open DevTools Network, clear the log after page load, run the tool action, and check for upload/API requests. |
What is Screenshot Redactor?
Free browser-local screenshot redactor for hiding sensitive details before AI upload, support tickets, bug reports, or public sharing. Draw blackout boxes over names, emails, account numbers, API keys, addresses, and internal URLs, then download a clean copy. Your screenshot never leaves your browser.
How to Use
- Drop, choose, or paste a supported screenshot into the tool.
- Draw a blackout box over each sensitive region.
- Move or resize boxes until the sensitive details are fully covered.
- Download the redacted image and review it before uploading or sharing.
Common Use Cases
- Hide an API key or token in a terminal screenshot before asking for debugging help.
- Cover customer details in a support screenshot before sharing it with an AI assistant.
- Redact account numbers or balances in a banking screenshot before external review.
- Remove internal URLs, user IDs, or employee names from product screenshots.
Practical Examples
Redact a terminal screenshot
A screenshot showing an API key and internal hostname. A clean image with those visible strings blacked out. Prepare a support chat screenshot
A support conversation with a customer name, email, and order ID. A redacted screenshot ready for internal review or AI summarizing. Clean a banking screenshot
A screenshot with account numbers and transaction references. A copy with sensitive fields covered before sharing. When to Use This Tool
- Use this before uploading a screenshot or flat image that contains visible private details.
- Use Metadata Remover when the image only needs hidden metadata cleanup.
- Use PDF Redactor when the source is a multi-page PDF that should remain a PDF.
Limitations
- Redaction boxes are rectangular. Irregular areas may need several boxes.
- Only supported image formats can be loaded and exported by the browser.
- You must review every visible sensitive detail yourself; the tool does not guarantee that all private text was found.
Quality and Accuracy Notes
- Blackout is safer than blur or pixelation for sensitive text because it fully covers the selected pixels.
- The output is a re-encoded image copy. Depending on format, this can change compression or strip common image metadata.
- Keep boxes slightly larger than the sensitive region so edges do not reveal nearby characters.
Format Support
| Direction | Format | Support | Notes |
|---|---|---|---|
| Input | PNG / JPG / WebP | Full | Common screenshot and web image formats are supported. |
| Input | Clipboard image | Partial | Clipboard paste depends on browser and operating-system support. |
| Output | Redacted image | Full | A re-encoded image copy is generated locally. |
Input formats: PNG, JPG, JPEG, WebP, Clipboard screenshot
Output formats: PNG, JPG, WebP, ZIP
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