Base64 contains invalid characters
Base64 contains invalid characters. Practical troubleshooting runbook for repeatable fixes and safer conversions.
Encoding Playbooks
Actionable playbooks for Encoding issues and workflows. Local-first, no-upload debugging and conversion.
Search playbooks
No cookies
Base64 strings with whitespace/newlines
Base64 strings with whitespace/newlines. Practical troubleshooting runbook for repeatable fixes and safer conversions.
Base64URL padding rules
Base64URL padding rules. Actionable remediation checklist with tool links and relevant guides.
Base64URL vs Base64 (JWT pitfalls)
Base64URL vs Base64 (JWT pitfalls). Practical troubleshooting runbook for repeatable fixes and safer conversions.
Convert Base64URL to Base64 (and back)
Convert Base64URL to Base64 (and back). Step-by-step no-upload workflow: validate, locate root cause, fix quickly, and verify.
Decode Base64 without uploading
Decode Base64 without uploading. Practical troubleshooting runbook for repeatable fixes and safer conversions.
Double-encoding (percent-encoded twice)
Double-encoding (percent-encoded twice). Actionable remediation checklist with tool links and relevant guides.
Encode Base64 locally without uploading
Encode Base64 locally without uploading. Practical troubleshooting runbook for repeatable fixes and safer conversions.
Escape/unescape JSON strings safely
Escape/unescape JSON strings safely. Actionable remediation checklist with tool links and relevant guides.
Extra Base64 padding
Extra Base64 padding. Step-by-step no-upload workflow: validate, locate root cause, fix quickly, and verify.
Failed to execute 'atob': string to be decoded is not correctly encoded
Failed to execute 'atob': string to be decoded is not correctly encoded. Step-by-step no-upload workflow: validate, locate root cause, fix quickly, and verify.
Hex vs Base64: how to tell
Hex vs Base64: how to tell. Step-by-step no-upload workflow: validate, locate root cause, fix quickly, and verify.
Incorrect Base64 padding (=)
Incorrect Base64 padding (=). Practical troubleshooting runbook for repeatable fixes and safer conversions.
Invalid percent-encoding (%)
Invalid percent-encoding (%). Practical troubleshooting runbook for repeatable fixes and safer conversions.
InvalidCharacterError: string to be decoded is not correctly encoded
InvalidCharacterError: string to be decoded is not correctly encoded. Practical troubleshooting runbook for repeatable fixes and safer conversions.
JWT has 3 parts: header.payload.signature
JWT has 3 parts: header.payload.signature. Practical troubleshooting runbook for repeatable fixes and safer conversions.
JWT payload JSON parse errors
JWT payload JSON parse errors. Step-by-step no-upload workflow: validate, locate root cause, fix quickly, and verify.
JWT segment is not valid Base64
JWT segment is not valid Base64. Step-by-step no-upload workflow: validate, locate root cause, fix quickly, and verify.
Missing Base64 padding
Missing Base64 padding. Step-by-step no-upload workflow: validate, locate root cause, fix quickly, and verify.
Mojibake (garbled text) fixes
Mojibake (garbled text) fixes. Practical troubleshooting runbook for repeatable fixes and safer conversions.
Normalize newlines (CRLF vs LF)
Normalize newlines (CRLF vs LF). Practical troubleshooting runbook for repeatable fixes and safer conversions.
Plus (+) vs space in query strings
Plus (+) vs space in query strings. Actionable remediation checklist with tool links and relevant guides.
Query string to JSON: safe no-upload workflow
Query string to JSON: safe no-upload workflow. Practical troubleshooting runbook for repeatable fixes and safer conversions.
Safe decoding workflow (don’t paste secrets online)
Safe decoding workflow (don’t paste secrets online). Practical troubleshooting runbook for repeatable fixes and safer conversions.
Strip BOM (UTF-8 BOM)
Strip BOM (UTF-8 BOM). Actionable remediation checklist with tool links and relevant guides.
Unicode escape sequences (\uXXXX)
Unicode escape sequences (\uXXXX). Step-by-step no-upload workflow: validate, locate root cause, fix quickly, and verify.
URL encode/decode: safe no-upload workflow
URL encode/decode: safe no-upload workflow. Actionable remediation checklist with tool links and relevant guides.
URL encoding basics (%XX)
URL encoding basics (%XX). Practical troubleshooting runbook for repeatable fixes and safer conversions.
UTF-8 vs UTF-16 encoding confusion
UTF-8 vs UTF-16 encoding confusion. Actionable remediation checklist with tool links and relevant guides.
Why URL decode turns + into space
Why URL decode turns + into space. Practical troubleshooting runbook for repeatable fixes and safer conversions.
Privacy & Security
All processing happens locally in your browser. Files are never uploaded.
Related by intent
Useful follow-up pages selected from real search impressions and no-click opportunities.
No-click fix: encodingNo-click fix: encoding utf8 bom issuesNo-click fix: no upload encoding alternatives guideRelated fix: neighbor csharp rust serde json map i64 col 2 workflows data importRelated fix: neighbor csharp rust serde json map u64 col 2 workflows data importRelated fix: neighbor csharp rust serde json null f64 col 2 workflows data importRelated fix: neighbor csharp python json workflows auth flow workflows data importRelated fix: neighbor csharp rust serde json map a map col 1 workflows data import
Quick fix checklist
- Reproduce the error on a minimal input.
- Check type/format and field mapping.
- Apply the smallest safe fix.
- Validate on production-like payload.