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Fix the garbled exportbefore it corrupts your data.fix CSV encoding and delimiter problems Windows

CSVPrune auto-detects delimiters and lets you override delimiter and encoding (UTF-8/16, Latin-1), so semicolon and European files read right — and leading zeros and long IDs are never mangled.

CSVPrune auto-detects delimiters and overrides encoding (UTF-8/16, Latin-1), so garbled semicolon and European exports read correctly while leading zeros and long IDs stay intact.

$14.99 USD — Perpetual License

One-time purchase · Lifetime updates · Delivered via the Microsoft Store

Get it from Microsoft Store

Purchased and updated securely through the Microsoft Store. No account needed on our site, no subscription, and a Microsoft receipt for easy corporate expensing.

Full CSVPrune overview
One-time purchase No telemetry Local-first

windows · local-first · no telemetry · one-time purchase

If this sounds like your week

The download opens as gibberish, or every field crammed into one column.

Accented names show up as "é", a European export packs each row into a single cell, and IDs that started with zeros arrive stripped. The file is fine — your tool just guessed the wrong delimiter or the wrong character encoding when it opened it.

Where tooling usually breaks

Excel guesses, guesses wrong, and mangles your data on the way in.

Double-click a semicolon-delimited or UTF-16 file and Excel often misreads it, splits nothing, or "helpfully" converts long order numbers to scientific notation and drops leading zeros. By the time you notice, the corruption is baked into your edits.

Where CSVPrune lands

Take control of the delimiter and the encoding, and keep your IDs intact.

CSVPrune auto-detects comma, semicolon, and tab delimiters and lets you override the delimiter and encoding (UTF-8, UTF-16, Latin-1) when detection is not enough, so garbled European and CRM exports read correctly. Values are treated as text, so leading zeros and long identifiers survive untouched, and exports are written with proper RFC-4180 quoting and clean UTF-8.

$14.99 USD — Perpetual License

One-time purchase · Lifetime updates · Delivered via the Microsoft Store

Get it from Microsoft Store

Purchased and updated securely through the Microsoft Store. No account needed on our site, no subscription, and a Microsoft receipt for easy corporate expensing.

Learn more about CSVPrune

windows · local-first · no telemetry · one-time purchase

What you get

Feature highlights

Opens what Excel chokes on

scroll, search, filter, and type-aware sort 100k+ row files instantly in a virtualized grid—no 1,048,576-row wall and no freezing.

Fixes broken exports

auto-detects and overrides delimiters (comma, semicolon, tab) and encodings (UTF-8/16, Latin-1) so CRM, Shopify, and Google Forms files stop arriving garbled—and leading zeros and long IDs are never silently mangled.

Deterministic cleaning pipeline

trim, normalize emails, find/replace (literal or regex), coerce numbers, currency, dates, and booleans, dedupe by any key column, and point-and-click prune rows—composed in the order you choose.

Live formula engine

create calculated columns with real-time preview and a ghost column in the grid, using column references, arithmetic, string functions, and helpers like coalesce()—saved as replayable steps.

Clean once, replay forever

save any sequence as a named recipe, apply it in one click, batch-run it across a folder, or point a watch folder at it so every new CSV is cleaned automatically.

Private by design

every row stays in local memory, with no cloud, no telemetry, and no network calls—auditable with Wireshark. Export to CSV, JSON, or XLSX, or run an audited export with a full before/after sidecar.

Especially when

  • Clean and dedupe messy CSV exports on Windows without uploading sensitive data to a web-based CSV cleaner
  • Open, search, and sort CSV files that are too large or too slow to handle in Excel
  • Fix CSV encoding and delimiter problems (UTF-16, Latin-1, semicolon, tab) that corrupt CRM, Shopify, and Google Forms exports
  • Replay the same cleaning steps on recurring files automatically instead of repeating them by hand every week

Who benefits

Real-world scenarios

The garbled European export

A semicolon-delimited, UTF-16 export from a European system opens with accented names turned to mojibake and every field crammed into a single column, with order IDs losing their leading zeros.

You set the delimiter and encoding in CSVPrune, the columns split correctly and the accents return, and because values stay text the leading zeros and long IDs are preserved on export.

The weekly tidy-up

A partner export arrives with trailing spaces, mixed-case emails, and a few blank rows every week, and you fix the same things by hand in a spreadsheet each time before anyone can use it.

You compose the trim, email-normalize, and row-prune steps once in CSVPrune, watch the live counts confirm the changes, and save it as a recipe so next week's file is a single click.

The hand-off

Finance wants a formatted XLSX and an internal tool needs JSON, but Save-As keeps dropping leading zeros and the online converters want you to upload the file first.

CSVPrune exports the same cleaned data to XLSX and JSON locally with identifiers intact, and you save the conversion as part of the recipe so future hand-offs are one click.

Deep dive

Delimiters, encodings, and the leading-zero problem, explained

A CSV is just text, but two invisible decisions govern whether it reads correctly: which character separates fields, and which character encoding the bytes use. Exports from European systems often use a semicolon instead of a comma; many database and CRM dumps are UTF-16 or Latin-1 rather than UTF-8. Hand that file to a tool that assumes comma-and-UTF-8 and you get every field jammed into one column, or accented characters rendered as "é" mojibake. CSVPrune auto-detects comma, semicolon, and tab delimiters on load, and when detection is not enough you can override both the delimiter and the encoding (UTF-8, UTF-16, Latin-1) to decode the file the way it was actually written. Separately, it avoids the most common corruption a spreadsheet inflicts: because cell values are handled as text rather than coerced to numbers on import, leading zeros on ZIP codes and account numbers survive, and long order IDs are not rounded into scientific notation. When you export, the file is written as clean UTF-8 with RFC-4180-compliant quoting, so the result opens correctly in the next tool instead of passing the corruption downstream. If you do want a column treated as a true number, date, or boolean, that is a deliberate coercion step you apply — not a guess made behind your back.

Trusted by pragmatic desktop users

Built for people who prefer tools that stay local.

Real workflows: focus timers that stay visible, batches that never leave the disk, and renames you can rewind.

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Senior Accountant · Manufacturing Company · United States · PinPoint

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Darren · Calgary, Alberta, Canada · Taskbar Sentinel

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Sherri · United States · OpticBatch & MetaForge

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Quotes are shown with customer permission; names and locations appear as reviewers provided them.

Our Core Moat

Engineered to respect your system boundaries.

System Resource Monitor (Idle State Comparison)
Automata Labs sub-5MB idle memory footprint compared to generic Electron applications

Lightweight Native Stack

Compiled Rust core wrapped inside an optimized Tauri shell. No heavy background node loops or duplicate Chromium engines cooking your memory footprint (<5MB idle RAM).

100% Local-First Privacy

Executes entirely on-device with full offline isolation. Absolute zero background telemetry policies, no metrics aggregation, and zero mandatory cloud-sync accounts.

Perpetual Fallback Licenses

Pay a single, clear one-time purchase price. Own your specific native software utility execution tier permanently without artificial subscription paywalls or ongoing usage tax.

FAQ

Straight answers—no glossary dump

How do I fix a CSV that opens garbled or all in one column?

That is almost always a delimiter or encoding mismatch. CSVPrune auto-detects comma, semicolon, and tab delimiters, and lets you manually override both the delimiter and the character encoding (UTF-8, UTF-16, or Latin-1) so the file decodes the way it was written. Accented characters render correctly and fields split properly. Because values are treated as text, leading zeros and long IDs are preserved rather than mangled, and exports are written as clean, properly quoted UTF-8.

Is CSVPrune private, and does it work offline?

Yes on both counts. CSVPrune runs entirely on your machine with no cloud, no telemetry, and no network access of any kind — there is no networking code in the app, so it works fully offline and nothing you load is ever uploaded. Your data stays in local memory for the session, and only minimal settings such as window state and recent paths (which you can turn off) are saved to disk. You can verify the zero-network behaviour with a connection monitor.

What file types and sizes does CSVPrune handle?

CSVPrune loads CSV files with comma, semicolon, or tab delimiters (auto-detected, with a manual delimiter and encoding override for UTF-8, UTF-16, and Latin-1) and is designed for large files, with smooth performance on hundred-thousand-row datasets and guidance up to around 500 MB. You can export your cleaned data to CSV, JSON, or XLSX, copy it to the clipboard, or use an audited export that adds a full before/after sidecar for compliance.

How much is CSVPrune, and is it a subscription?

CSVPrune is a one-time purchase on the Microsoft Store — no subscription and no account required to use it. You own the version you buy and it keeps working offline. Use the Microsoft Store button on this page for the current listing and price, and because the privacy posture is structural rather than a setting, you can verify the local-only behaviour yourself at any time with a network monitor.

Related pages

Clean the messy export in one repeatable pass. Remove duplicate rows — including the ones Excel misses. Open the CSV that makes Excel freeze — instantly. Join two CSVs without fighting VLOOKUP.

Clean it once.
Replay it forever—on your machine.

CSVPrune opens the files that break Excel, fixes encoding and delimiter garble, dedupes by any column, builds calculated columns with a live formula engine, and saves your steps as a replayable recipe. Export to CSV, JSON, or XLSX. No cloud, no telemetry—verifiable with Wireshark.

$14.99 USD — Perpetual License

One-time purchase · Lifetime updates · Delivered via the Microsoft Store

Get it from Microsoft Store

Purchased and updated securely through the Microsoft Store. No account needed on our site, no subscription, and a Microsoft receipt for easy corporate expensing.

Open full product page

Technical specifications

Technical specifications for procurement

Spec Implementation
Data Sovereignty Every row stays in local Rust in-memory state for the session; the full dataset never crosses to the cloud and is serialized only for your explicit export or clipboard copy
Telemetry Status None; zero network code, verifiable with Wireshark or Resource Monitor
Core Runtime Rust + Tauri v2 backend (heavy CSV parsing, cleaning, and profiling stay in Rust) with a React 18 virtualized grid
Network Requirements Fully functional offline; no network access requested in the Tauri capability set
Deployment Compatibility Windows 10 and 11 via the Microsoft Store; macOS universal build via direct download
Import Auto-detects comma, semicolon, and tab delimiters; manual delimiter and UTF-8/16 + Latin-1 encoding override
Cleaning ops Trim, normalize emails, find/replace (regex), coerce number/currency/date/boolean, dedup-by-key, visual row prune, calculated columns
Automation Saved recipes, batch-run across a folder, and watch-folder auto-clean of new files
Export CSV, JSON, or XLSX, plus audited export with a full before/after sidecar JSON; ~500 MB file ceiling