Paste log output full of sequences like [31m and [0m. Get clean plain text for a ticket or a search — or a colored preview showing the log the way the terminal displayed it.
Runs entirely in your browser — nothing you enter here is sent to a server.
Command-line tools color their output with ANSI escape sequences: short control codes that a terminal interprets instead of printing. ESC[31m switches the text to red, ESC[1m to bold, ESC[0m resets everything. In a terminal you see colored text. Anywhere else — a CI log file, a log aggregator, a ticket, a chat message — you see the codes themselves: [31mERROR[0m, or \x1b[31m, \033[31m or ^[[31m, depending on how the text was captured.
They are more than ugly. They break searches (the word ERROR is now surrounded by invisible bytes), confuse parsers and grok patterns, and make diffs between two runs useless. Stripping them gives you the text the program meant to print.
Sequences ending in m: 16 basic colors, 256-color and 24-bit color, bold, dim, italic, underline. Rendered in the preview.
Sequences ending in letters such as A, K or G — used by progress bars and spinners. Removed.
A progress bar redraws one line with \r. In a file that becomes hundreds of copies; the cleaner keeps only the final state.
Sequences that set the window title or create clickable links. Removed, keeping the visible text.
Cleaning afterwards is a workaround. Most tools can be told not to emit color when the output is not a terminal: set the NO_COLOR=1 environment variable (a widely supported convention), or pass --no-color or --color=never. In CI, some tools need TERM=dumb or CI=true. On the command line, sed 's/\x1b\[[0-9;]*[A-Za-z]//g' strips the common sequences from a file.
Control sequences, starting with the ESC character, that tell a terminal to change text color or style, move the cursor or clear the screen. They are instructions for the terminal, not part of the text.
Paste the log here and copy the plain text. On a server, use sed 's/\x1b\[[0-9;]*[A-Za-z]//g' file.log, or better, disable color in the tool that writes the log.
The tool printed ANSI color codes and the log viewer shows them as text instead of interpreting them — the ESC character itself is invisible, so only the rest of the sequence appears.
Yes. Literal \x1b, \u001b, \033, \e and ^[ notations are treated the same as a real ESC character, so logs copied from JSON or from an editor are handled too.
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