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Converts to CSV on secure servers · first daily conversion free · no signup

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Export the file listing of any ZIP archive as a CSV — path, size, compressed size, modified date, and CRC for every entry. Ideal for auditing archives without extracting them.

By ChangeThisFile Team · Last updated: March 2026

Quick Answer

ChangeThisFile reads the contents of your ZIP archive on a secure server and emits a CSV that lists every entry: full path inside the archive, uncompressed size, compressed size, modified date, and CRC checksum. The original ZIP is never extracted to disk and is auto-deleted after processing. Free, no signup required.

First daily conversion free No signup required Encrypted transfer · Async jobs kept up to 24h Queued when needed Updated May 2026

ZIP vs CSV: Format Comparison

Key differences between the two formats

Feature	ZIP	CSV
Type	Binary compressed archive	Plain-text tabular data
Contents	Many files plus a central directory index	Rows of comma-separated values
Human-readable	No — binary structure	Yes — opens in any text editor or spreadsheet
Use case	Bundling and compressing multiple files	Tabular audit logs, inventory listings
Metadata captured	Per-entry size, CRC, timestamp, attributes	One row per file with metadata columns
File size	Often megabytes to gigabytes	Typically kilobytes — just the listing
Tooling	Every OS, plus 7-Zip, WinRAR, unzip	Excel, Google Sheets, pandas, any database import

When to Convert

Common scenarios where this conversion is useful

Audit the contents of a delivered ZIP

When a client or vendor sends a large ZIP archive, export the listing to CSV first so you can verify exactly which files are inside, their sizes, and timestamps before extracting.

Compare two archive snapshots

Generate a CSV listing for each version of an archive and diff them in a spreadsheet to see which files were added, removed, or changed size between releases.

Build a manifest for compliance or backup verification

Produce a tamper-evident CSV manifest of every file in a backup ZIP — path, size, CRC — and store it separately as an integrity check.

Plan extraction storage requirements

Sum the uncompressed sizes from the CSV to know exactly how much disk space the ZIP will need once extracted — useful for cloud or low-storage environments.

Feed an asset index into a database or BI tool

Import the CSV into a database to enable SQL queries over archive contents — find all PDFs over 10MB or every file last modified before a given date, without extracting anything.

Who Uses This Conversion

Tailored guidance for different workflows

Developers

Convert ZIP config files to CSV for compatibility with different tools or frameworks
Transform ZIP API responses to CSV for debugging, logging, or documentation

Validate the converted CSV output with a linter to catch any structural issues from the conversion

Watch for data type coercion (e.g., numbers becoming strings) when converting between ZIP and CSV

Data Analysts

Convert ZIP exports to CSV for importing into spreadsheet software, databases, or BI tools
Transform ZIP datasets to CSV for sharing with teammates who use different analysis tools

Check that column delimiters and quote escaping are handled correctly in the converted CSV file

Preview the first few rows of the CSV output to verify headers and data alignment

System Administrators

Convert ZIP configuration to CSV when migrating between infrastructure tools or platforms
Transform ZIP log exports to CSV for ingesting into monitoring or analysis systems

Back up the original ZIP config before converting, especially for production systems

Test the converted CSV in a staging environment before deploying to production

How to Convert ZIP to CSV

1

Upload your ZIP file

Drag and drop your .zip archive onto the converter, or click to browse. The free tier accepts files up to 25MB; eligible paid browser access accepts up to 100MB.
2

Server-side listing extraction

Your archive is read on the server using 7-Zip's listing mode. The central directory is parsed and each entry's path, size, compressed size, modified date, and CRC are written as CSV rows. The archive itself is never extracted.
3

Download the CSV

Click Download to save the resulting .csv file. The original ZIP is automatically deleted from our servers after processing.

Automate this conversion

Convert ZIP to CSV via API

Integrate this conversion into your pipeline with 3 lines of code. Free tier: 25 conversions/month.

curl -X POST https://changethisfile.com/v1/convert \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "file=@input.zip" \
  -F "target=csv" \
  -o output.csv --fail

const form = new FormData();
form.append('file', fileInput.files[0]);
form.append('target', 'csv');

const res = await fetch('https://changethisfile.com/v1/convert', {
  method: 'POST',
  headers: { 'Authorization': 'Bearer YOUR_API_KEY' },
  body: form
});
const blob = await res.blob(); // your converted CSV file

Replace YOUR_API_KEY with your free key — no credit card needed.

Get a free API key

Frequently Asked Questions

Does this extract the files from the ZIP to CSV?

No. This produces a CSV listing of what is inside the ZIP — path, size, compressed size, modified date, CRC — without extracting any file contents. If you need a specific file out of the archive, extract the ZIP locally and convert the file you need separately.

What columns appear in the CSV?

The CSV includes: path (full path inside the archive), size (uncompressed bytes), compressed_size (bytes), modified (ISO 8601 timestamp), crc (CRC-32 checksum), and is_directory (true for folder entries). Header row is always included.

Does this work for password-protected ZIP files?

Yes — the file listing of a password-protected ZIP is itself not encrypted in standard ZIP files, so the converter can produce a CSV of paths and sizes without the password. AES-encrypted ZIPs with encrypted headers will return an error.

Is the ZIP to CSV conversion free?

Yes. ChangeThisFile is free with no signup, no watermark, and no usage limits.

Are my files kept private?

Yes. Your ZIP is transferred over HTTPS, read for its directory listing only, and automatically deleted from our servers immediately afterward.

What about other archive formats like 7z or TAR?

This specific tool targets ZIP archives. We also support 7Z, RAR, TAR, and TAR.GZ archives — try the related conversions or pick the matching converter from the homepage.

Will the CSV preserve folder structure inside the ZIP?

Yes. The path column shows the full path of each entry inside the archive, including any subdirectories (e.g. images/photos/cat.jpg). You can sort or group on path prefix to reconstruct the folder tree.

Can I open the CSV in Excel or Google Sheets?

Yes. The output is a standard UTF-8 CSV with a header row and properly quoted fields. It opens cleanly in Excel, Google Sheets, Numbers, and any data tool that imports CSV.

Does this support ZIP files over 4GB (ZIP64)?

ZIP64 archives are supported up to the paid browser upload limit of 100MB. The CSV will include the correct sizes even for large entries inside a ZIP64-formatted file.

What if my ZIP file is corrupted?

If the central directory of the ZIP is unreadable, the converter returns an error rather than a partial CSV. Try repairing the archive with a tool like 'zip -FF' or re-downloading from the source.

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Read our guides on file formats and conversion

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