ID Detective

Paste any mystery identifier — UUID, ULID, ObjectId, Snowflake, timestamp, JWT, IBAN, IMEI, ISBN, EAN — and get its type, decoded fields, and embedded timestamps.

DeveloperUniqueBrowser 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 ID Detective?

ID Detective Formatter is a free, browser-based tool that helps you make messy data readable. Paste any mystery identifier — UUID, ULID, ObjectId, Snowflake, timestamp, JWT, IBAN, IMEI, ISBN, EAN — and get its type, decoded fields, and embedded timestamps. 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 ID Detective

1Paste your data into the input panel or drop a file.
2Choose how it should look — indentation, pretty-print vs. minify, and structure options.
3Copy the formatted output or download it for use in your project.

Features

Toggle between pretty-print and minify
Consistent, configurable indentation
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 formatter jobs without opening a heavy app
Preparing data before importing it elsewhere
Sharing a reproducible result with a teammate via a link

Used by

Backend developers
Frontend developers
DevOps engineers
Students
Developers
Technical writers

Common errors

Formatting is used before validating, so syntax errors remain hidden.
Minified output is pasted where humans still need to review it.
Tabs and spaces are mixed in a way that makes diffs noisy.
A formatter is expected to fix semantic data problems that require cleaning instead.

How it works

1Parses or tokenizes the data input.
2Applies consistent spacing, indentation, or compacting rules.
3Returns output without changing the meaning of the data.

Recommended workflow

1
Prepare the input
Format or minify the data before sharing it, committing it, or using it as a readable example.
2
Run ID Detective
Review the preview, copy or download the result, and keep everything local in your browser.
3
Next recommended tool
ULID Generator: Generate sortable, timestamp-prefixed ULID identifiers.
Open tool
4
Then continue with
JWT Inspector: Decode JWT header/payload and verify HS256/384/512 signatures.
Open tool
5
Then continue with
Unix Timestamp Converter: Convert Unix timestamps (s/ms) to and from human dates.
Open tool

Frequently asked questions

How do I use ID Detective?: Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Paste any mystery identifier — UUID, ULID, ObjectId, Snowflake, timestamp, JWT, IBAN, IMEI, ISBN, EAN — and get its type, decoded fields, and embedded timestamps.
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 ID Detective Formatter 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.

ID Detective

ReadyHow to use

Paste any mystery identifier — UUID, ULID, ObjectId, Snowflake, timestamp, JWT, IBAN, IMEI, ISBN, EAN — and get its type, decoded fields, and embedded timestamps.

DeveloperUniqueBrowser workspace

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

Paste any identifier — one per line — and this tool guesses what it is using offline heuristics: format, checksums, and embedded timestamps. Nothing is sent anywhere, and JWTs are decoded but never verified.

Identifiers (one per line)

Try a sample:

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

What is ID Detective?

How to use ID Detective

1Paste your data into the input panel or drop a file.
2Choose how it should look — indentation, pretty-print vs. minify, and structure options.
3Copy the formatted output or download it for use in your project.

Features

Toggle between pretty-print and minify
Consistent, configurable indentation
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 formatter jobs without opening a heavy app
Preparing data before importing it elsewhere
Sharing a reproducible result with a teammate via a link

Used by

Backend developers
Frontend developers
DevOps engineers
Students
Developers
Technical writers

Common errors

Formatting is used before validating, so syntax errors remain hidden.
Minified output is pasted where humans still need to review it.
Tabs and spaces are mixed in a way that makes diffs noisy.
A formatter is expected to fix semantic data problems that require cleaning instead.

How it works

1Parses or tokenizes the data input.
2Applies consistent spacing, indentation, or compacting rules.
3Returns output without changing the meaning of the data.

Recommended workflow

1
Prepare the input
Format or minify the data before sharing it, committing it, or using it as a readable example.
2
Run ID Detective
Review the preview, copy or download the result, and keep everything local in your browser.
3
Next recommended tool
ULID Generator: Generate sortable, timestamp-prefixed ULID identifiers.
Open tool
4
Then continue with
JWT Inspector: Decode JWT header/payload and verify HS256/384/512 signatures.
Open tool
5
Then continue with
Unix Timestamp Converter: Convert Unix timestamps (s/ms) to and from human dates.
Open tool

Frequently asked questions

How do I use ID Detective?: Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Paste any mystery identifier — UUID, ULID, ObjectId, Snowflake, timestamp, JWT, IBAN, IMEI, ISBN, EAN — and get its type, decoded fields, and embedded timestamps.
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 ID Detective Formatter 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 ID Detective?

How to use ID Detective

Features

Common uses

Used by

Common errors

How it works

Recommended workflow

Prepare the input

Run ID Detective

Next recommended tool

Then continue with

Then continue with

Frequently asked questions

What is ID Detective?

How to use ID Detective

Features

Common uses

Used by

Common errors

How it works

Recommended workflow

Prepare the input

Run ID Detective

Next recommended tool

Then continue with

Then continue with

Frequently asked questions