Increment Hex Digits
Increase the value of individual hex nybbles. 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 Increment Hex Digits
- 1. Paste the input hex. Drop a hex string such as 9ef into the input pane. Every nybble is transformed on its own, so lists of values and long byte strings are handled just as happily as one short number.
- 2. Dial in the Amount. Amount is how far each digit climbs. At 1, the 9 in 9ef becomes a and the f wraps to 0, giving af0. Any amount works, and 16 brings every digit back where it started.
- 3. Handle multiple values with Separator. For input like a comma-separated list of color codes, set Separator to the delimiter. Digits shift within each value while the punctuation between values survives unchanged.
- 4. Copy the result. Take the output from the right-hand pane. The mapping is a pure rotation of the 0 to f alphabet, so the decrement tool with the same setting reverses it exactly.
When to use Increment Hex Digits
Increment Hex Digits raises each nybble of a hex string by a fixed amount, wrapping past f back to 0. Unlike adding to the whole number, no carries cross between positions, which makes it a clean per-digit rotation. That property suits light obfuscation, puzzle construction and quick mutation of hex test data.
- Applying a Caesar-style shift to hex. You want a trivially reversible encoding for hex tokens in a demo, nothing cryptographic, just not plainly readable. Shifting every digit up by a shared secret amount does the job in seconds.
- Mutating fuzzer corpus entries. A fuzzing session needs variants of a known-good hex payload that stay well-formed but differ everywhere. Incrementing all digits by different amounts yields a family of related inputs quickly.
- Nudging color palettes brighter. For a rough lightening pass over a list of hex colors in a prototype stylesheet, bumping each digit raises the channel values uniformly, giving an instant washed-out variant of the palette.
- Recreating a puzzle answer key. An escape-room clue was built by rotating the digits of a hex code. Applying the same rotation here regenerates the expected answer so you can verify the puzzle solves cleanly.
Examples
Add one to each digit
Input
9ef
Output
af0
About the Increment Hex Digits tool
Increment Hex Digits runs as plain JavaScript in your browser tab, with no server behind it. Increase the value of individual hex nybbles. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Hex Tools section, 108 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 2 settings, including Amount and Separator, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Increment Hex Digits free to use?
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?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
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?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
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.