Black Out Text in Image
Black out text in an image, free and private, in your browser. We don't upload your photos. Cover words and numbers with a solid black box.
Same local editor as the homepage. This page is a deep link for one job, not a separate upload service.
Blur
Softer cover. Raise the strength until text is unreadable.
Pixelate
Mosaic blocks for faces and photos. Larger blocks hide more.
Black Box
Solid cover for names, IDs, and anything that must not be readable.
This job
Black box is for text you must not leave readable
Use a black box when the text must not stay readable: passwords, account numbers, recovery codes, and ID numbers. This page starts in that mode because a polite blur leaves letter shapes. Draw one bar per value, with a little padding, and leave generic field labels visible. The edit stays in the browser.
This page opens the editor with Black Box already selected because the job is text that should not survive a squint: passwords, account numbers, recovery codes, and id numbers. Blur is the wrong default here. Letter shapes remain when the strength is polite.
Draw a separate bar for each value and leave the field label if the label is generic. A form that says “Account number” with a black bar where the number was is still useful. A form that is one black rectangle is not. Give the box a little padding. Descenders, underlines, and italic type escape a box that kisses the glyphs.
One secret, one box
Do not hide the surrounding sentence unless the sentence is the secret.
Padding
Cover a few pixels past the text so a character edge does not remain.
The ticket body
If you remove a token from the image, do not paste it into the comment underneath.
Same editor
You can switch to blur for a non-secret region before the next box. The mode applies to what you draw next.
How to use
How do you redact this image locally?
Load the image in this browser, draw over each sensitive region, and export a PNG. The canvas edit does not upload the file. Paste a screenshot with Ctrl+V or Command-V, or drop a JPG, PNG, or WebP. Undo fixes a box without changing the original on your device.
- 1
Upload the image that contains the text you want to black out, or paste a screenshot.
- 2
Black Box is already selected.
- 3
Draw a box over each word, number, label, or paragraph you want to cover.
- 4
Repeat for every area that must be fully blocked from view. Use Undo if a box is in the wrong place.
- 5
Click "Export redacted PNG" to save the image with the text blacked out.
You can also paste a screenshot with Ctrl+V or ⌘V. Undo and Redo fix a box without changing the original file.
Why use this tool
Why does this stay in the browser?
This page is for images that already contain private material. Blur, pixelate, and black box run in your browser, so the file is not sent away to be cleaned. Use a black box for secrets that must not stay readable. Use blur or pixelate only after you have checked that the cover is enough.
Some text should not be merely softened. Passwords, personal identifiers, account numbers, and confidential labels often need stronger visual certainty than blur provides.
Black box redaction is the clearest way to signal that information was intentionally removed from an image before sharing.
This page is built for that exact use case: cover the text locally in your browser, then download the redacted image.
Questions
What should you know before you export?
The image is processed locally, and export writes a new PNG. Blur is not the same cover as a black box. Paste works with Ctrl+V or Command-V. If your question is about a specific leak, such as a password, a face, or a sidebar, use the guides linked below before you send the file.
What does it mean to black out text in an image?
It means covering the selected text with a solid black box so the original words are no longer visible in the exported image.
Is black box better than blur for text?
For highly sensitive text, yes. Black Box gives the strongest visible redaction because it replaces the selected area entirely instead of softening it.
Can I black out multiple lines or paragraphs?
Yes. Draw as many separate boxes as needed, one for each line, block, or field.
Does this work on screenshots and scanned documents?
Yes. You can black out text in screenshots, document photos, scans, charts, forms, and other images.
Is the image uploaded anywhere?
No. The tool processes the image locally in your browser and never uploads it for editing.
Related workflows
Which related tool should you open next?
Every tool on this site is the same local editor with a different starting note. Open a related page when the job is narrower, such as faces, screenshots, or solid black text. You do not upload the image to a second service to switch jobs.
Guides
Which guide matches this job?
Read the guide that matches the mistake you are about to make. Text secrets usually need a black box, not a light blur. Faces, plates, and sidebars need their own pass. Local editing matters most when the file should not be uploaded in order to hide it.
Tool network
Where are the other free tools?
The list below is that same editor under different job names. Pick the name that matches what you need to hide. Processing stays in the browser on every page here, and none of these links is a separate upload form.