Handy Dev Tools
Simple online tools for everyday tasks.

No favorites

    Base64 Encoder/Decoder
    Markdown to HTML
    HTML to Markdown
    URL Encoder/Decoder
    Unicode Escape Converter
    Unicode Encode/Decode
    SQL Formatter
    SQL Splitter
    JSON Formatter
    XML Formatter
    YAML Formatter
    GraphQL Formatter
    JSON to YAML Conversion
    YAML to JSON Conversion
    JSON to TOML Conversion
    TOML to JSON Conversion
    HTML Entity Encode/Decode
    TOML to YAML Conversion
    YAML to TOML Conversion
    CSV to SQL INSERT Conversion
    Markdown Table Generator
    JSON to XML Conversion
    XML to JSON Conversion
    UUID Generator
    ULID Generator
    Password Generator
    Hash Generator
    Lorem Ipsum Generator
    Lorem Picsum Image URL Generator
    Test Data Generator Tool
    QR Code Generator
    S3 Path Parser & Converter
    IP Address Calculator
    Subnet Split
    Subnet Consolidation
    CloudFront Signed URL Generator
    RDS Connection String Generator
    Coordinate Format Converter
    Geo Format Converter
    JWT Decoder & Parser
    Basic Auth
    Password Strength Analyzer
    Credit Card Validator
    RSA Key Pair Generator
    Case Conversion
    Romaji Conversion
    Roman Numeral Conversion
    Phonetic Code Conversion
    Character Counter
    Text Diff
    HTML Tag Remover
    Regex Tester
    Color Conversion
    Dice Roll
    Crontab generator
    Crontab parser
    Emoji Picker
    Unix Timestamp Converter
    HTTP Status Code Search
    Port Number Search
    MIME Type Lookup
    Base64 File Converter
    Image Base64 Encode/Decode
    User-Agent Parser
    URL Parser
    OGP Checker
    Commit Message Generator
    Chmod Calculator
    Terminal GIF Generator
    .env Parser & Validator
Ctrl+K

HTTP Status Code Search

Search HTTP status code meanings. Click a code in the table to open a modal with details (common causes and solutions for 4xx/5xx).

StatusPhrase
1xx Informational
100Continue
101Switching Protocols
102Processing
2xx Success
200OK
201Created
204No Content
3xx Redirection
301Moved Permanently
302Found
304Not Modified
307Temporary Redirect
308Permanent Redirect
4xx Client Error
400Bad Request
401Unauthorized
403Forbidden
404Not Found
405Method Not Allowed
408Request Timeout
409Conflict
422Unprocessable Entity
429Too Many Requests
5xx Server Error
500Internal Server Error
502Bad Gateway
503Service Unavailable
504Gateway Timeout

How to use

About this tool

Searches HTTP status codes and shows meaning, common causes, and what to do.

How to use

Search by code or keyword; select from the list to see details.

Use cases

β€’ Error handling β€’ API design and docs β€’ Incident response β€’ Learning

FAQ

Q: What HTTP status code ranges are covered?
A: 1xx (Informational), 2xx (Success), 3xx (Redirection), 4xx (Client Error), and 5xx (Server Error). All standard IANA-registered codes are included, plus common non-standard codes like 429 (Too Many Requests) and 503 (Service Unavailable).
Q: Can I search by keyword instead of code number?
A: Yes. Searching "not found" returns 404, "redirect" returns 301/302/307/308, and so on. The search matches both the code number and the status description.
Q: What is the difference between 301 and 302 redirects?
A: 301 (Moved Permanently) tells browsers and search engines the resource has moved forever β€” the new URL should be cached and indexed. 302 (Found / Temporary Redirect) indicates a temporary move; the original URL should still be used in future requests.
Q: When should an API return 400 vs 422?
A: 400 (Bad Request) is for malformed syntax or invalid input that cannot be parsed. 422 (Unprocessable Entity) indicates the request is syntactically valid but semantically incorrect β€” such as a missing required field or an invalid value type.
Q: Does this tool require a network connection?
A: No. The status code database is bundled with the tool and works entirely offline in the browser.