Metadata Extractor

ReadyHow to use

Extract row count, column types, file size, byte distribution.

Schema & MetadataBrowser workspace

Free to use. No account, no daily limit, and no backend processing for tool input.

Tip: use samples, upload, copy, download, and send-to actions inside the workspace where available.

What is Metadata Extractor?

Metadata Extractor is a free, browser-based tool that helps you pull exactly what you need out of noisy text. Extract row count, column types, file size, byte distribution. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.

How to use Metadata Extractor

1Paste the text, HTML, or data you want to extract from.
2The matches are pulled out automatically as you type.
3Copy the extracted list or download it.

Features

Pulls matches instantly with de-duplication
Great for cleaning scraped or pasted text
100% client-side — no upload, fully private
Free with no account, no watermark, and no daily limit
Works on large inputs, limited only by your device's memory
Load a sample, then copy, download, or share your result

Common uses

Quick one-off extractor jobs without opening a heavy app
Preparing data before importing it elsewhere
Sharing a reproducible result with a teammate via a link

Used by

Data engineers
Database administrators
Analytics engineers
API developers
Researchers
SEO specialists

Common errors

The source text contains repeated matches that need deduplication.
Copied HTML includes hidden markup around the values.
The extraction pattern is too broad and captures unrelated text.
Extracted values are used without validation.

How it works

1Scans the source text locally.
2Matches values that fit the extraction target.
3Outputs a clean list for copying, validation, or conversion.

Recommended workflow

1
Prepare the input
Extract the useful values first, then validate, deduplicate, or convert the extracted list.
2
Run Metadata Extractor
Review the preview, copy or download the result, and keep everything local in your browser.
3
Next recommended tool
Auto Schema Detector: Infer a schema (types, nullability, uniqueness) from any sample dataset.
Open tool
4
Then continue with
Column Relationship Detector: Spot foreign-key candidates and 1:1 / 1:N relationships.
Open tool
5
Then continue with
Data Dictionary Generator: Generate a markdown / CSV data dictionary from any dataset.
Open tool

Frequently asked questions

How do I use Metadata Extractor?: Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Extract row count, column types, file size, byte distribution.
Is my data uploaded or stored anywhere?: No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
Is Metadata Extractor free?: Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.
What's the maximum file size?: There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.
Do I need to install anything?: No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.

Metadata Extractor

ReadyHow to use

Extract row count, column types, file size, byte distribution.

Schema & MetadataBrowser workspace

Free to use. No account, no daily limit, and no backend processing for tool input.

Delimiterdetected: ","

Input CSVCSV

Try a sample:

File size0 B

Rows0

Columns0

Cells0

Empty cells0

Avg row length0 chars

Tip: use samples, upload, copy, download, and send-to actions inside the workspace where available.

What is Metadata Extractor?

How to use Metadata Extractor

1Paste the text, HTML, or data you want to extract from.
2The matches are pulled out automatically as you type.
3Copy the extracted list or download it.

Features

Pulls matches instantly with de-duplication
Great for cleaning scraped or pasted text
100% client-side — no upload, fully private
Free with no account, no watermark, and no daily limit
Works on large inputs, limited only by your device's memory
Load a sample, then copy, download, or share your result

Common uses

Quick one-off extractor jobs without opening a heavy app
Preparing data before importing it elsewhere
Sharing a reproducible result with a teammate via a link

Used by

Data engineers
Database administrators
Analytics engineers
API developers
Researchers
SEO specialists

Common errors

The source text contains repeated matches that need deduplication.
Copied HTML includes hidden markup around the values.
The extraction pattern is too broad and captures unrelated text.
Extracted values are used without validation.

How it works

1Scans the source text locally.
2Matches values that fit the extraction target.
3Outputs a clean list for copying, validation, or conversion.

Recommended workflow

1
Prepare the input
Extract the useful values first, then validate, deduplicate, or convert the extracted list.
2
Run Metadata Extractor
Review the preview, copy or download the result, and keep everything local in your browser.
3
Next recommended tool
Auto Schema Detector: Infer a schema (types, nullability, uniqueness) from any sample dataset.
Open tool
4
Then continue with
Column Relationship Detector: Spot foreign-key candidates and 1:1 / 1:N relationships.
Open tool
5
Then continue with
Data Dictionary Generator: Generate a markdown / CSV data dictionary from any dataset.
Open tool

Frequently asked questions

How do I use Metadata Extractor?: Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Extract row count, column types, file size, byte distribution.
Is my data uploaded or stored anywhere?: No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
Is Metadata Extractor free?: Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.
What's the maximum file size?: There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.
Do I need to install anything?: No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.

What is Metadata Extractor?

How to use Metadata Extractor

Features

Common uses

Used by

Common errors

How it works

Recommended workflow

Prepare the input

Run Metadata Extractor

Next recommended tool

Then continue with

Then continue with

Frequently asked questions

What is Metadata Extractor?

How to use Metadata Extractor

Features

Common uses

Used by

Common errors

How it works

Recommended workflow

Prepare the input

Run Metadata Extractor

Next recommended tool

Then continue with

Then continue with

Frequently asked questions