Preview on Mac
Use Tools → Redact rather than treating a shape as removal. Duplicate the original before working on the sharing copy.
Read the official guidanceSYNTHETIC FILES TESTED
Is this redacted PNG or PDF actually ready to share?
Do not judge the darkness of the bar. First separate visual cover from removal in the sharing copy, then reverse-check search, copyable text, and hidden information.
Fully synthetic sampleTested locally by BitShovel
- Take away
- A pre-send decision card with separate image and PDF routes
- Prepare
- No upload · a sharing copy that stays on your device
- Time
- About 1 minute to judge (fixing not included)
- Cost
- No site fee · external tool costs vary
No real-file upload · not a safety certification
ONE-MINUTE DECISION
Take a different route for images and PDFs.
This page does not read your file. Choose PNG/JPEG or PDF, then perform the relevant checks on your own device.
What are you about to share?
If you only drew a black box, do not send it yet.Text, comments, attachments, or metadata may still be present. A real redaction tool is not the same as a shape annotation.
1
Use a real Redact command and apply it
Do not rely on a shape, highlight, or visual crop. Prefer an organization-approved redaction tool and save a separate sharing copy.
2
Reopen the sharing copy, search, and copy all text
Search for the hidden name, amount, or identifier, then paste all selectable text into a blank document. If the target appears, do not send it.
3
Check hidden information and the sharing route
Review metadata, comments, attachments, forms, scripts, and cloud version history. Use an approved process for regulated or high-risk files.
Mark each step after you do it. Choices live only while this page is open.
Pre-send judgment cardNot enough to decide
0 / 3A check is unfinished or uncertain. Do not treat “it looks covered” as permission to send.
Next stepReturn to the source, use a real redaction command, and save a separate sharing copy.
These actions reduce known risks; they do not make BitShovel a safety certifier for your file.
Mark each step after you do it. Choices live only while this page is open.
SOLUTION STATUS
See how far this route has been verified.
- Synthetic sampleRetested here
- Check routev1.2 · 2026-08-04
- Independent completionNo independent completion report yet
View maintenance and version record
- Maintainer
- BitShovel editorial
- Checked by BitShovel
- Synthetic PDFs, text extraction, region OCR, and rendering
- First published
- 2026-08-03
Release history
- v1.2Current
After copying the card, you can report a remaining blocker beside the result; the judgment still stays only on this open page.
- v1.1
Established synthetic samples, format-specific checks, evidence scope, stop conditions, and source-bound feedback.
TRY THE DIFFERENCE
Download two fully synthetic PDFs that look similar but differ underneath.
Open the black-box overlay, search for or copy `DEMO_PRICE_27500`, then compare the flattened sample. This demonstrates one text-layer difference—not universal safety.
WHAT BITSHOVEL ACTUALLY RAN
One source page, three files, four ways of reading them.
We did not use anyone’s private data. The target area contains only a fictional amount and a machine-check token.
1Original synthetic PDF
27,500 visibleText extraction found the token2Black box only
Eye and region OCR saw the barText extraction still found 27,5003Flattened comparison
Only the bar visibleText layer empty in this testThese results cover only our generation methods. Print drivers, online tools, scans, forms, attachments, and OCR layers require separate checks.
FIND THE RIGHT COMMAND
The button name is not the verdict. Inspect the exported sharing copy.
Adobe Acrobat Pro
After marking and applying redactions, continue with sanitization for metadata, comments, hidden layers, attachments, and other non-visible content.
Read the official guidancePNG / JPEG
Avoid blur and pixelation. Crop or use an opaque block, export a new flattened image, then review metadata and editing history.
Read the official guidanceA USEFUL NEXT TASK
Once the file risk is handled, hand it over clearly.
Handoff can turn confirmed material into a one-page handover in this browser. It does not decide whether the original file was truly redacted.