Developer Error Resolution Guides

B64

Encoding 3 errors

Fix Base64 Decoding Issues & Character Encoding Errors

Resolve Base64 decoding failures, padding errors, invalid characters, and UTF-8 encoding issues. Step-by-step solutions with code examples.

base64 decoding error base64 not working

JWT

Authentication 3 errors

Fix JWT Verification Failures & Token Expiration Errors

Debug JWT signature verification failures, expired tokens, algorithm mismatches, and claim validation errors. Decode and inspect tokens step by step.

jwt verification failed jwt not working

{ }

Data Formats 3 errors

Fix JSON Formatting Errors & Parsing Issues

Fix JSON parse errors, unexpected token errors, trailing commas, unquoted keys, and encoding issues. Validate and format JSON with our free online tool.

json parse error json not valid

#

Security 3 errors

Fix Hash Mismatch Problems & Algorithm Mismatches

Debug hash verification failures, algorithm mismatches, encoding differences, and checksum errors. Compare MD5, SHA-256, and other hash outputs online.

hash mismatch sha256 not matching

ID

Data Formats 3 errors

Fix UUID Generation Conflicts & Collision Issues

Resolve UUID format errors, version mismatches, collision concerns, and database constraint violations. Understand UUID versions and generate valid UUIDs online.

uuid collision uuid not unique

%

Encoding 3 errors

Fix URL Encoding & Decoding Errors

Resolve URL encoding problems: double-encoding, broken query parameters, special character issues, and percent-encoding errors.

url encoding not working url encode special characters

.*

Developer Tools 3 errors

Fix Regular Expression Syntax Errors & Pattern Failures

Debug regex syntax errors, catastrophic backtracking, unescaped characters, and flag issues. Test and fix your patterns with our free online regex tester.

regex not matching regex syntax error

MD

Content 3 errors

Fix Markdown Rendering Issues & Formatting Problems

Fix broken Markdown: images not showing, links not working, tables misaligned, code blocks not formatting. Preview and debug Markdown in real time.

markdown not rendering markdown image not showing

PW

Security 3 errors

Fix Password Hashing & Bcrypt Verification Errors

Debug password hashing failures: bcrypt cost factor issues, salt generation problems, hash comparison errors, and migration from MD5/SHA to bcrypt.

bcrypt not working password hash mismatch

&;

Security 3 errors

Fix HTML Entity Encoding Errors & Prevent XSS

Resolve HTML entity encoding issues: broken special characters, XSS vulnerabilities from missing encoding, double-encoding, and entity reference errors.

html encoding not working html entities broken

TS

Data Formats 3 errors

Fix Timestamp Conversion & Timezone Errors

Debug Unix timestamp issues: milliseconds vs seconds confusion, timezone mismatches, daylight saving time errors, and date parsing failures.

timestamp wrong timezone unix timestamp not working

CSS

Frontend 3 errors

Fix CSS Minification Errors & Broken Stylesheets

Debug CSS minification issues: broken selectors, missing styles, media query errors, and CSS syntax problems that prevent compression.

css minify not working css broken after minification

CSV

Data Formats 3 errors

Fix JSON to CSV Conversion Errors

Resolve JSON to CSV conversion issues: nested object handling, array flattening, special character escaping, encoding problems, and missing columns.

json to csv not working json csv conversion error

QR

Tools 3 errors

Fix QR Code Generation & Scanning Problems

Debug QR code issues: codes that will not scan, data too long, encoding errors, and color contrast problems. Generate and test QR codes online.

qr code not scanning qr code not working

+-

Developer Tools 3 errors

Fix Diff Checker & Text Comparison Issues

Resolve diff checker problems: whitespace-only changes, encoding mismatches, line ending differences (CRLF vs LF), and large file comparison issues.

diff checker not working text comparison wrong

RGB

Design 3 errors

Fix Color Conversion & Format Errors

Fix color conversion problems: HEX to RGB mismatches, HSL rounding errors, opacity handling issues, and color space conversion inaccuracies.

color conversion not matching hex to rgb wrong

Aa

Text Processing 3 errors

Fix Text Case Conversion & Unicode Issues

Resolve text case conversion problems: locale-sensitive casing, Unicode edge cases, camelCase/snake_case conversion errors, and title case rules.

text case converter not working uppercase not working unicode

Li

Content 3 errors

Fix Lorem Ipsum & Placeholder Text Issues

Resolve placeholder text issues: lorem ipsum appearing in production, text length problems, multilingual placeholder needs, and formatting inconsistencies.

lorem ipsum generator issues placeholder text not working

WC

Text Processing 3 errors

Fix Word Counter & Character Count Accuracy Issues

Debug word counting discrepancies: different tools give different counts, whitespace handling, CJK character counting, and reading time estimation accuracy.

word count different between tools character count wrong

IMG

Encoding 3 errors

Fix Image to Base64 & Data URI Conversion Issues

Resolve image-to-Base64 problems: file size bloat, MIME type mismatches, data URI formatting errors, and browser compatibility issues with embedded images.

image to base64 not working data uri broken