All Masking, Converter, Formatter, Diff, Decoder, Detector, and Mock Data Tools

Structured Data

JSON : Mask sensitive fields in JSON payloads before sharing logs, API examples, or AI prompts.
Excel (XLSX) : Sanitize worksheet exports and copied spreadsheet rows before sharing QA, ops, or business data externally.
CSV : Mask sensitive columns in CSV exports from dashboards, CRM systems, and billing tools.
XML : Redact customer or system values in XML payloads, SOAP bodies, and enterprise export files.
SQL : Redact values in SQL INSERT statements before sharing example rows or database snippets.
HTML : Remove or redact sensitive data in HTML snippets, templates, CMS fragments, and rendered markup before sharing.
YAML : Clean secrets and identifiers from YAML configs, manifests, and automation examples.
NDJSON : Mask newline-delimited JSON events before sharing NDJSON logs, event streams, and pipeline samples.
TSV : Sanitize tab-separated exports while keeping headers, rows, and operational data readable.

Converters

JSON to XML : Convert JSON payloads and nested objects into XML online for docs, SOAP examples, and integration review.
JSON to CSV : Convert JSON arrays into spreadsheet-ready CSV for exports, QA review, and reporting workflows.
JSON to YAML : Transform JSON payloads into YAML for configuration examples, manifests, and documentation.
CSV to JSON : Transform spreadsheet rows into JSON arrays for API mocks, fixtures, and developer workflows.
CSV to XML : Convert tabular export data into XML for integrations, docs, and sample exchange.
CSV to YAML : Convert row-based CSV data into YAML for configuration examples and automation docs.
XML to JSON : Convert XML and SOAP-like payloads into JSON for debugging, comparison, and modern API workflows.
XML to YAML : Turn XML exports into readable YAML for config-style review and transformation workflows.
YAML to JSON : Convert YAML manifests and config files into JSON for debugging, diffing, and structured review.

Diff & Compare

JSON Diff : Compare JSON payloads by field, value, and structure before release reviews, debugging, or schema changes.
Text Diff : Review added, removed, and changed lines in plain text, notes, prompts, and documentation.
JWT Diff : Decode and compare JWT claims side by side to inspect changed scopes, roles, expirations, or tenant context.
CSV Diff : Compare CSV rows and columns to see field-level export changes and data review deltas.
HTTP Request / Response Diff : Review request and response changes across headers, body content, and debugging traces.
API Response Diff : Compare API response bodies to spot changed fields, identifiers, and values between versions.
XML Diff : Compare XML tags, attributes, and text content before sharing changed payload samples or config exports.
YAML Diff : Review YAML configuration changes line by line while keeping indentation and structure readable.
SQL Diff : Review SQL statement changes across query text, inserted values, and updated example data.
Log Diff : Compare log files to isolate new errors, stack frames, warning lines, or suspicious changes.

Security

PII Detector : Scan text and payloads for common personally identifiable information before sharing logs, tickets, or AI prompts.
API Key Detector : Find API keys and credential-like strings in config snippets, code, request dumps, and support notes.
Secret Scanner : Detect passwords, API keys, tokens, and secret-like strings before external distribution.
Token Scanner : Identify bearer tokens, access tokens, refresh tokens, and JWT-like strings in logs and request text.
Credit Card Detector : Detect and review card-like numbers inside notes, exports, and mixed technical content.
IP Address Masker : Redact IPv4 addresses in logs, request traces, and infrastructure notes before sharing.
UUID Masker : Hide UUID values and identifier-like strings in logs, traces, and payload examples.
Email Extractor : Extract email addresses from logs, tickets, exports, and mixed text for review or cleanup.

Requests & Tokens

JWT : Decode and mask JWT claims before sharing tokens for troubleshooting, integration review, or AI-assisted debugging.
HTTP Header : Remove bearer tokens, cookies, API keys, and sensitive header values from request snippets.
HTTP Request : Sanitize raw HTTP request text including method lines, headers, and body content for debugging and support handoff.
cURL : Mask headers, query strings, and request bodies in cURL commands before sending examples externally.
URL Query : Hide sensitive query parameter values in URLs before pasting links into chats, docs, or tickets.
Cookie : Mask session cookies, browser cookies, and cookie-style key-value strings before external sharing.
HAR File : Redact cookies, authorization headers, request bodies, and response fields inside HAR exports.

Decoders

JWT Decoder : Decode JWT headers and payload claims locally in the browser without using a remote token inspector.
Base64 Decoder : Decode Base64 strings in the browser and mask sensitive values in the decoded output.
URL Encoder / Decoder : Encode or decode URLs, query strings, and escaped link fragments locally before sharing them.
Query String Decoder : Parse raw query strings into readable JSON for debugging, docs, and support review.
JSON Escape Decoder : Decode escaped JSON strings from logs, stack traces, and serialized payload fragments.
Base64 URL Decoder : Decode URL-safe Base64 strings used in JWT-style payloads and signed token fragments.
HTML Entity Decoder : Decode or encode HTML entities such as < and & for debugging and documentation.
Unicode Escape Decoder : Decode Unicode escape sequences and escaped text fragments before reviewing payload snippets or logs.
Hex Decoder : Decode or encode hex strings locally for low-level text inspection and security workflows.

Encoders

JWT Encoder : Encode JSON claims into unsigned JWT text locally for test tokens, docs, staging payloads, and debugging workflows.
Base64 Encoder : Encode plain text into Base64 locally for sample payloads, token fragments, and debugging workflows.
URL Encoder : Encode URLs and query values before sharing callback links, redirects, or request examples.
Query String Encoder : Convert key-value input into a clean encoded query string for tests, links, and API docs.
JSON Escape Encoder : Escape raw text into JSON-safe string content for logs, examples, and serialized payload fragments.
Base64 URL Encoder : Encode URL-safe Base64 text for JWT-style payload parts and signed token fragments.
HTML Entity Encoder : Encode HTML entities for templates, docs, rendered markup, and escaped examples.
Unicode Escape Encoder : Convert text into Unicode escape sequences for debugging, transport, and serialized content review.
Hex Encoder : Encode text into hex strings for low-level debugging, protocol review, and binary-safe examples.

Config & Logs

.env : Redact environment variables such as passwords, API keys, and client secrets in config files.
Docker Env : Review Docker environment files and container config values without exposing private runtime secrets.
INI : Sanitize section-based INI configuration files while keeping keys, groups, and comments readable.
Properties : Clean Java and application properties files before sharing environment-specific configuration examples.
Text Log : Detect and mask common PII and secret patterns in raw text logs, traces, and support notes.
Stack Trace : Remove identifiers, tokens, emails, and host details from exception traces and debugging output.
Nginx Log : Redact client IPs, query parameters, cookies, and identifiers in Nginx access logs.

Mock Data & Generators

Mock JSON Generator : Generate safe mock JSON payloads from a field template for demos, API examples, QA, and documentation.
Mock API Response Generator : Build realistic API response bodies from a JSON template without using production data.
Mock CSV Generator : Create header-aware CSV rows and dummy exports for spreadsheet examples, support files, and sample uploads.
Mock User Profile Generator : Generate realistic user records with names, emails, addresses, and account metadata for testing and docs.
UUID Generator : Generate random UUID values for sample IDs, event identifiers, and fixture data.
Fake Email Generator : Create fake email address lists for CSV imports, test accounts, demos, and onboarding content.
Password Generator : Generate strong sample passwords locally for staging accounts, test users, and demo environments.
API Key Generator : Generate fake API key strings for screenshots, tutorials, and safe integration examples.
Fake Log Generator : Produce realistic dummy log lines for support docs, runbooks, parser tests, and alert examples.
Mock SQL INSERT Generator : Create safe SQL INSERT examples from a table and column template for docs, QA, and tutorials.

Formatters & Validators

JSON Formatter / Validator : Validate JSON online, format JSON cleanly, and inspect malformed payloads before sharing API examples.
XML Formatter / Validator : Validate XML online, pretty-print XML payloads, and review SOAP or export markup safely in the browser.
YAML Formatter / Validator : Normalize YAML indentation, catch spacing issues, and review config or manifest text before sharing it.
CSV Formatter / Validator : Validate CSV row width, normalize exports, and clean spreadsheet text before diffing or masking it.
HTML Formatter / Validator : Format HTML snippets, review nested tags, and clean markup before masking content or sharing templates.
JavaScript Formatter : Format JavaScript online, validate JS syntax, and clean debugging snippets before docs, reviews, or support handoff.
GraphQL Formatter : Pretty-print GraphQL queries and mutations online before API debugging, ticket sharing, or documentation updates.
Markdown Formatter : Clean README text, release notes, and Markdown docs before publishing or sharing technical instructions.
.env Formatter : Normalize environment variable files and review config text before masking secrets or sharing setup examples.
HTTP Request Formatter : Format raw HTTP requests, normalize header lines, and review request bodies before support tickets or API docs.
SQL Formatter / Validator : Format SQL queries and SQL INSERT statements online for release review, docs, debugging, and safe example sharing.

Regex Validators

JSON Regex Tester : Validate JSON fields against regex rules online and highlight invalid nested values in API payloads.
XML Regex Tester : Validate XML tags and node values against regex rules before sharing exports or SOAP payloads.
HTML Regex Tester : Check HTML snippets and template text against regex rules before publishing or review.
CSV / TSV Regex Tester : Validate spreadsheet columns with regex rules before importing CSV or TSV files.
SQL Regex Tester : Test SQL example values against regex rules before sharing INSERT or UPDATE statements.
Log Regex Tester : Validate line-based log fields such as emails, IDs, and status values against regex rules.
Plain Text Regex Tester : Test free-form text and key-value lines against regex rules in the browser.
HTTP Regex Tester : Validate raw HTTP headers and request body fields against regex rules before debugging or sharing.

Web & API

GraphQL : Mask variables, IDs, auth tokens, and user fields in GraphQL request and response examples.
API Response : Sanitize API response bodies containing customer fields, identifiers, and system metadata.
Webhook Payload : Clean incoming or outgoing webhook payloads before vendor review, support exchange, or AI analysis.
Postman Collection : Redact tokens, variables, example bodies, and auth headers inside exported Postman collections.
OpenAPI / Swagger : Planned for endpoint examples, server URLs, auth schemes, and sample payload cleanup.

DevOps & Infra

Kubernetes Secret Masker : Mask encoded secret values and private manifest fields before sharing Kubernetes examples.
Terraform Variables Masker : Redact Terraform variables, tfvars values, and provider credentials in infrastructure snippets.
Helm Values Masker : Sanitize Helm values YAML before sharing deployment configuration, overrides, or charts.

Guides

How to use this tool directory

Start with the format or workflow closest to what you need to clean, inspect, or generate. Structured data tools usually capture the highest-intent masking traffic, while security scanners, request tools, and decoders help teams review technical content before sharing it in tickets, docs, AI tools, Slack, or vendor workflows.

This hub also helps search engines understand how Mask Payload covers masking, redaction, diff viewer and comparison workflows, decoding, safe sample generation, and secure debugging across many different data formats. If you are unsure which page fits your input, start with the closest category above and follow the related tools from there.