Base45 Decode a String
Decode a string from Base45. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Base45 Decode a String
- 1. Paste the Base45 string. Enter the Base45-encoded value into the input pane, including any spaces or percent signs, since Base45 uses a 45-character alphabet that includes those symbols.
- 2. Read the decoded text. The tool reverses the Base45 alphabet back into raw bytes and shows the resulting text in the output pane as soon as you paste valid input.
- 3. Copy the decoded result. Copy the decoded text and use it wherever the original value belongs, such as while inspecting the payload of a QR-code-based credential.
When to use Base45 Decode a String
Base45 Decode a String reverses Base45 encoding back into readable text. Base45 is the encoding used inside EU Digital COVID Certificate QR codes and other QR-friendly payloads because its alphabet fits QR alphanumeric mode efficiently.
- Inspecting a health certificate QR payload. You scanned a QR code from a digital certificate and got a Base45 string; decoding it is the first step before further decompressing or parsing the CBOR data inside.
- Debugging a QR-code generator. You are building a system that Base45-encodes data before putting it in a QR code, and want to decode a sample string to confirm your encoder round-trips correctly.
- Verifying interoperability with RFC 9285. You implemented Base45 per the RFC in your own codebase and want a known-good decode of a test vector to check your output matches the specification.
- Recovering data from a shared QR image. A colleague forwarded a plain-text Base45 dump extracted from a QR code and you need the underlying text without setting up a QR-parsing library yourself.
Examples
Decode %69 VDL2
Input
%69 VDL2
Output
Hello
About the Base45 Decode a String tool
Base45 Decode a String does its work locally, right in the browser. Decode a string from Base45. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the String Tools collection on EditSafely, a set of 159 small, focused String utilities that share the same instant, private workspace.
There is nothing to configure. Provide the input and the result appears on its own. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Does Base45 Decode a String cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.