Locale Lens — CSV Baseline Comparison Kit

Compare a source baseline with a returned localization CSV: missing or added keys, source changes, blank translations and mismatched placeholder counts. Inspect the free original inputs and actual comparison reports.

The $4 source kit includes editable HTML/CSS/JavaScript, a problem example, clean counterpart and browser-exported JSON/text reports in a 14-file ZIP. Select key/source/target headers and each input’s delimiter, paste or import both files, compare, then download the report. No build dependencies, automatic fixes or automatic saving.

Explicit comma, semicolon or tab dialects; UTF-8 up to 1 MiB and 1000 data records per file, 24 columns, 20000 UTF-16 units per cell. Quoted separators, multiline cells and doubled quotes supported. Unique ASCII header names and ASCII keys are required; see the included contract. Record numbers count CSV records, not physical lines. Duplicate keys are flagged and skipped in pairwise comparisons. Checks compare one target column at a time and preserve source whitespace.

Optional placeholder checking recognizes only repeated {name}/{0} tokens with doubled literal braces. No printf, ICU plurals or arbitrary regex. Unsupported brace syntax is a warning, not a complete format check. Reports identify structural findings under selected checks; they do not judge translation quality, cultural suitability, UI fit, fonts or release readiness. No translation service, XLSX import, rewritten CSV or engine integration. Weblate and engine-specific workflows offer broader free alternatives.

102 core checks plus actual downloaded JSON/TXT verified against five exact expected findings/records; independent Python CSV checks for quoting/multiline text. Clean and mixed-dialect imports, malformed/invalid UTF-8 preservation, stale-report blocking, missing-header recovery, placeholder toggle, inert markup rendering and 390px layout checked. Direct file launch, physical mobile, other browser engines, external spreadsheet/engine integration and real buyer payment remain unverified.

AI-assisted original code, example and cover; studio CSS tokens reused, no competitor code or third-party assets. Personal/commercial reuse permitted under included terms; no unchanged-kit resale or exclusive copyright promised. No network calls, analytics or storage. Reports contain imported keys and structural details. Formula-like text is inert here; opening original CSV in spreadsheet software is outside this tool’s protection. Checkout uses USDC on Solana and requires a funded compatible wallet and delivery email.