ANSI Styled Log Exporter

How to use ANSI Styled Log Exporter

Share a readable original build or test log while keeping selected color/emphasis changes and the text they affected. A bounded state machine records every accepted style event, exact source ranges and normalized text runs, then exports an inert standalone HTML document. Source HTML, commands and hyperlinks remain literal text; the tool site displays the evidence and downloadable source without mounting the log as active content.

1. Choose an actual UTF-8 log file or paste the original source containing real ESC SGR sequences. A selected file takes precedence over pasted text.
2. Choose a page background and run the complete selected-profile parse. Inspect original source spans, style events and normalized plain text.
3. Download the standalone HTML or evidence JSON. Open and verify the separate artifact before sharing it; it is not a terminal recording, color calibration or secret-removal service.

Good to know

• One optional strict UTF-8 file of at most 200,000 bytes, or up to 50,000 UTF-16 source code units. A leading BOM is ignored only for display and remains in evidence. CRLF becomes LF; bare CR is refused. LF and HTAB are retained; HTML uses CSS tab-size 8 and does not model terminal cell widths or tab stops. Title is nonblank single-line text up to 160 characters.
• Only real ESC [ decimal/semicolon m SGR sequences are accepted. Each sequence is at most 64 characters and 16 parameters; parameters have at most three digits, with an empty parameter meaning 0. Literal backslash-x1b text is not decoded as ESC. Up to 1,000 sequences, 1,001 text runs and 256 distinct effective styles are allowed.
• Selected emphasis codes are 0, 1, 3, 4, 7, 9, 22, 23, 24, 27 and 29. Foreground/background support 30–37, 40–47, 90–97, 100–107, defaults 39/49, and explicit 38/48;2;r;g;b RGB components from 0 through 255. The first 16 colors use the fixed palette reported in JSON, not the palette or font of your terminal. Background choices are local presentation modes.
• Indexed 256 colors, colon subparameters, dim, blink, conceal, alternate fonts, OSC/hyperlinks, cursor/erase commands, backspace, BEL, C1 controls, bare CR/overprinting and device responses are outside this profile. Any unknown or unsupported control rejects the entire output rather than being silently stripped. This is deliberately not a complete ANSI/xterm/ECMA-48 emulator.
• The report retains original input, per-event controls and per-run original UTF-16 end-exclusive source ranges. Display text normalizes CRLF and removes only accepted style controls plus one initial BOM. Runs retain Unicode and source HTML as literal text. Logs may contain credentials/private content; no automatic redaction, anonymization or persistent storage occurs.
• Standalone HTML uses escaped text, generated classes, fixed CSS properties and bounded numeric color values, with an exact stylesheet SHA-256 policy. It contains no executable script, links, external resources or user markup. Web Crypto SHA-256 is required. The product page never renders user HTML or relaxes its policy. HTML and readable evidence are each capped at 1,000,000 characters. Real browser font/layout/CSP and printing require separate checks; no exact terminal screenshot or calibrated-color claim.
• Processing is local. Output is limited to 1,000,000 text characters unless a stricter file limit is stated.