Ascii85 Encode a String
Encode a string to Ascii85. 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 Ascii85 Encode a String
- 1. Paste the text to encode. Type or paste the plain text you want converted into the input pane. Ascii85 works on any UTF-8 text, encoding it four bytes at a time.
- 2. Read the Ascii85 output. The tool groups your text's bytes into blocks of four and encodes each block as five printable characters using the Ascii85 alphabet, shown right away in the output pane.
- 3. Copy the encoded string. Copy the Ascii85 result and embed it wherever that specific encoding is expected, such as inside a PostScript or PDF document you are hand-assembling.
When to use Ascii85 Encode a String
Ascii85 Encode a String converts plain text into Ascii85 (Base85), the denser cousin of Base64 used inside PDF and PostScript files. It packs four bytes into five characters, giving roughly 25 percent less overhead than Base64 for the same data.
- Building a PostScript snippet by hand. You are constructing a small PostScript file and need a chunk of binary-like data encoded in Ascii85 to match the format the interpreter expects for embedded streams.
- Comparing encoding density. You want to show, side by side, how much shorter Ascii85 output is than Base64 for the same input string, useful in a write-up comparing binary-to-text encodings.
- Testing a PDF-generation library. You are debugging a PDF library that encodes stream data in Ascii85 and want a known-good reference encoding of a test string to compare against the library's output.
- Porting an Ascii85 encoder. You just implemented Ascii85 encoding in a new language and need a trusted reference output for a specific input to validate your implementation is correct.
Examples
Encode Hello
Input
Hello
Output
87cURDZ
About the Ascii85 Encode a String tool
Ascii85 Encode a String is a free online tool that works entirely inside your web browser. Encode a string to Ascii85. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 159 String utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
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.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Ascii85 Encode 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.