How to Hide Spoilers in a Screenshot Before Posting
A screenshot can be useful and still reveal too much. A game result, plot twist, puzzle answer, chat message, or leaderboard position may be visible in one small section while the rest of the image is worth sharing. Instead of cropping away the context, hide only the spoiler area. ImgToolkit's Image Redaction tool lets you draw rectangular covers over selected parts of an image, then download a spoiler-safe PNG without uploading the source file.
Quick Answer
A screenshot can be useful and still reveal too much. A game result, plot twist, puzzle answer, chat message, or leaderboard position may be visible in one small section while the rest of the image is worth sharing.
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Step-by-Step Guide
7 steps · takes under 1 minute
Find the spoiler area
Open the screenshot and identify the exact region that reveals the result, answer, character, item, or conversation. Keeping the rest of the image visible gives people context without giving away the surprise.
Open the Image Redaction tool
Go to ImgToolkit's Image Redaction tool. It accepts JPG, PNG, and WebP screenshots and processes them directly in your browser.
Upload the screenshot
Drop the image into the upload area or choose it from your device. The source screenshot stays on your device while you work.
Cover the spoiler
Drag a rectangle across the result, answer, or message you want to hide. Add another rectangle if the spoiler appears in more than one place, such as a score and a notification preview.
Choose how much to reveal
Use a solid cover when the spoiler should be completely hidden. Use blur or pixelate when you want to show that something is underneath without making the words or result readable.
Preview the whole image
Check the marked screenshot at its displayed size and scan nearby captions, usernames, thumbnails, browser notifications, and other text that could reveal the same spoiler indirectly.
Download the spoiler-safe PNG
Download the full-resolution PNG and open the exported file separately before posting. Confirm that the spoiler is covered and the remaining screenshot still communicates the context you want to share.
100% Private — Zero Uploads
ImgToolkit runs entirely in your browser using the Canvas API. Your images are never sent to a server, never stored in the cloud, and never seen by anyone else. This makes it safe for sensitive documents, client work, medical imagery, and confidential screenshots.
Pro tip
Use 75–85% quality for web images — you get 60–80% smaller files with no visible difference at normal screen sizes.
Format & File Size Comparison
Same 1080×1080px photo processed four ways
| Format | Quality | File Size | Notes |
|---|---|---|---|
| PNG (original) | Perfect | 4.2 MB | No compression — too large for web |
| Compressed PNG | Visually identical | 1.1 MB | −74% — transparency preserved |
| JPG (85% quality) | Excellent | 310 KB | −93% · Best for photos |
| WebP (85%)BEST | Excellent | 205 KB | −95% · Recommended for web |
Based on a 1080×1080px photo. Results vary by image content and complexity.
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Frequently Asked Questions
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Hide a screenshot spoiler