Skip to content

Sidebar

Displays the mobile sidebar.

Home Base64 toolbox JSON Validator & Formatter JSON ⇄ YAML converter URL encoder / decoder XML Validator & Formatter YAML Validator & Formatter JWT Decoder SSL/TLS Certificate Validator

JSON Validator & Formatter
Base64 toolbox
JWT Decoder
Hash generator
UUID generator
QR code generator
Regex tester
Color converter
Password generator

Color converter
JSON Validator & Formatter
QR code generator
UUID generator
JWT Decoder

APCA contrast calculator
Colour blindness simulator
Colour contrast checker
Color converter
Colour mixer
Colour name finder
Colour shades generator
CSS gradient generator
OKLCH colour converter
Random palette generator

Aspect ratio calculator
Border radius generator
Box shadow generator
PX to REM converter

Palindrome checker
Binary text translator
Text case converter
Character frequency counter
Find and replace
HTML to Markdown
Keyword extractor
Markdown formatter
Markdown linter
Markdown to HTML
Markdown to plain text
Readability score
Regex explainer
Regex tester
ROT13 and Caesar cipher
String escape and unescape
Subtitle tools
Trim lines
Sort lines
Word counter
Unicode inspector

AES Encryption
Basic Auth Generator
Bcrypt Generator
Checksum Calculator
CORS Policy Builder
CORS Response Validator
Credit Card Validator
CSP Header Builder
CSR Decoder
ECDSA key pair generator
Ed25519 key pair generator
Email Address Validator
EXIF Metadata Stripper
File Encryptor (AES)
Hash Comparison
Hash generator
HMAC generator
JWT Decoder
JWT Signer
JWT Validator
Password generator
Password strength checker
PEM Certificate Inspector
RSA key pair generator
security.txt Generator
SQL Injection Detector
SSH Key Pair Generator
Text Encryptor
Random Token Generator
TOTP Generator

Bandwidth calculator
curl to code
DNS lookup
Email header analyzer
HTTP header builder
HTTP header parser
IPv6 expander
MX lookup
Network info
NS lookup
Port reference
Postman collection builder
Reverse DNS lookup
SSL/TLS Certificate Validator
Subnet calculator
TXT lookup
URL parser
Redirect chain checker
User-Agent parser
WebSocket frame parser
WHOIS lookup

Compound Interest Calculator
Loan and Mortgage Calculator
Tip and Bill Splitter

SMD Resistor Code Decoder

GPA and Grade Calculator

Kitchen Unit Converter

Biorhythm Calculator
BMR and TDEE Calculator
Pregnancy Due Date Calculator
Sleep Cycle Calculator

Home
Development utilities
RSS and Atom validator

en fr ru

RSS and Atom validator

Parse an RSS 2.0 or Atom feed and check required elements, dates, GUID uniqueness and enclosures.

Input

Fill in the fields below, then run the tool.

Feed XML

Validate dates

Processed on the server and never stored. Press Ctrl/⌘ + Enter to run.

Result

Results appear here

No result yet

The result appears here

About this tool

Parse an RSS 2.0 or Atom feed and check required elements, dates, GUID uniqueness and enclosures.

Related tools

ASN.1 DER decoder

Decode a DER or BER structure from hex or base64 into a tree of tags, lengths and values.

Development utilities

IEEE 754 explorer

Decompose a float into sign, exponent and mantissa, with neighbours, ULP and round-trip error.

Development utilities

Chmod calculator

Convert an octal or symbolic file mode into numeric, symbolic and special-bit forms.

Development utilities

Diff and patch generator

Produce a unified diff between two texts with configurable context and an optional patch header.

Development utilities

ООО «Арбрерус» · ИНН 9705159935 · ОГРН 1217700466752 · Registered office: 143960, Moscow Oblast, Reutov, 5a Gagarina St., room 56 · contact@arbrerus.ru

Legal information · Privacy Policy · Cookie Policy

arbrerus.ru — All rights reserved.

Version 0.1.0

Esc

APCA contrast calculator Color
Colour blindness simulator Color
Colour contrast checker Color
Color converter Color
Colour mixer Color
Colour name finder Color
Colour shades generator Color
CSS gradient generator Color
OKLCH colour converter Color
Random palette generator Color
Aspect ratio calculator Design
Border radius generator Design
Box shadow generator Design
PX to REM converter Design
Base64 toolbox Data processing
BSON Hex Converter Data processing
CSV Data Viewer Data processing
CSV to JSON converter Data processing
CSV to Markdown Data processing
CSV to SQL Data processing
CSV validator Data processing
Diff checker Data processing
ER Diagram Generator Data processing
GraphQL Formatter Data processing
Gzip Tools Data processing
HTML entities encoder Data processing
HTML to Text Data processing
JSON Validator & Formatter Data processing
JSON Schema Builder Data processing
JSON Schema validator Data processing
JSON to CSV converter Data processing
JSON to XML converter Data processing
JSON ⇄ YAML converter Data processing
JSON5 Validator Data processing
JSON Lines Converter Data processing
JSONPath tester Data processing
Remove duplicate lines Data processing
NoSQL Validator Data processing
Number base converter Data processing
SOAP Formatter Data processing
SQL Performance Analyzer Data processing
SQL Formatter Data processing
Temperature Converter Data processing
Timestamp converter Data processing
Timezone Converter Data processing
TOML to JSON Data processing
TOML validator Data processing
URL encoder / decoder Data processing
WSDL Formatter Data processing
XML Validator & Formatter Data processing
XML to JSON converter Data processing
YAML to TOML Data processing
YAML Validator & Formatter Data processing
Palindrome checker Text analysis
Binary text translator Text analysis
Text case converter Text analysis
Character frequency counter Text analysis
Find and replace Text analysis
HTML to Markdown Text analysis
Keyword extractor Text analysis
Markdown formatter Text analysis
Markdown linter Text analysis
Markdown to HTML Text analysis
Markdown to plain text Text analysis
Readability score Text analysis
Regex explainer Text analysis
Regex tester Text analysis
ROT13 and Caesar cipher Text analysis
String escape and unescape Text analysis
Subtitle tools Text analysis
Trim lines Text analysis
Sort lines Text analysis
Word counter Text analysis
Unicode inspector Text analysis
Address Generator Generators
Barcode generator Generators
BIC / SWIFT Generator Generators
Credit Card Number Generator Generators
Crypto Address Generator Generators
EAN-13 / UPC-A Generator Generators
Email Signature Generator Generators
Favicon Generator Generators
HTTP Status Code Reference Generators
IBAN Generator Generators
IBAN Validator Generators
IMEI Generator Generators
ISIN Generator Generators
License Generator Generators
MAC Address Generator Generators
Meta Tag Generator Generators
NanoID generator Generators
PWA Manifest Generator Generators
QR code generator Generators
robots.txt generator Generators
Routing Number Generator Generators
RSS / Atom Feed Generator Generators
Sitemap generator Generators
Structured Data Generator Generators
Tax ID Validator Generators
TIN Generator Generators
ULID generator Generators
UUID generator Generators
VAT Number Generator Generators
VAT Number Validator Generators
VIN Generator Generators
AES Encryption Security
Basic Auth Generator Security
Bcrypt Generator Security
Checksum Calculator Security
CORS Policy Builder Security
CORS Response Validator Security
Credit Card Validator Security
CSP Header Builder Security
CSR Decoder Security
ECDSA key pair generator Security
Ed25519 key pair generator Security
Email Address Validator Security
EXIF Metadata Stripper Security
File Encryptor (AES) Security
Hash Comparison Security
Hash generator Security
HMAC generator Security
JWT Decoder Security
JWT Signer Security
JWT Validator Security
Password generator Security
Password strength checker Security
PEM Certificate Inspector Security
RSA key pair generator Security
security.txt Generator Security
SQL Injection Detector Security
SSH Key Pair Generator Security
Text Encryptor Security
Random Token Generator Security
TOTP Generator Security
Bandwidth calculator Network & API
curl to code Network & API
DNS lookup Network & API
Email header analyzer Network & API
HTTP header builder Network & API
HTTP header parser Network & API
IPv6 expander Network & API
MX lookup Network & API
Network info Network & API
NS lookup Network & API
Port reference Network & API
Postman collection builder Network & API
Reverse DNS lookup Network & API
SSL/TLS Certificate Validator Network & API
Subnet calculator Network & API
TXT lookup Network & API
URL parser Network & API
Redirect chain checker Network & API
User-Agent parser Network & API
WebSocket frame parser Network & API
WHOIS lookup Network & API
ASN.1 DER decoder Development utilities
IEEE 754 explorer Development utilities
Chmod calculator Development utilities
Diff and patch generator Development utilities
Cron expression generator Development utilities
Cron expression parser Development utilities
CSS beautifier Development utilities
CSS minifier Development utilities
Date calculator Development utilities
Docker Compose builder Development utilities
Dockerfile generator Development utilities
.env encoder Development utilities
Conventional commit builder Development utilities
GitHub Actions generator Development utilities
.gitignore generator Development utilities
HTML formatter Development utilities
HTML minifier Development utilities
Huffman tree Development utilities
Hyperlink generator Development utilities
JavaScript beautifier Development utilities
JavaScript minifier Development utilities
JSON Schema to TypeScript Development utilities
JSON to Go structs Development utilities
JSON to TypeScript Development utilities
Karnaugh map solver Development utilities
Kubernetes manifest generator Development utilities
Lorem Ipsum generator Development utilities
MIME detector Development utilities
Morse code translator Development utilities
nginx config builder Development utilities
Programmer calculator Development utilities
Regex generator Development utilities
Regex to code Development utilities
RSS and Atom validator Development utilities
SemVer calculator Development utilities
SemVer range intersection Development utilities
Slug generator Development utilities
SQL formatter Development utilities
UART baud rate calculator Development utilities
Unit converter Development utilities
Compound Interest Calculator Finance
Loan and Mortgage Calculator Finance
Tip and Bill Splitter Finance
SMD Resistor Code Decoder Device & sensors
GPA and Grade Calculator Education & science
Kitchen Unit Converter Everyday
Biorhythm Calculator Health
BMR and TDEE Calculator Health
Pregnancy Due Date Calculator Health
Sleep Cycle Calculator Health

No tool matches your search

↑↓ navigate · Enter open · ★ favorite

Home
Categories

AI assistant

The conversational assistant arrives in a later update.