Private browser tools for developers.
Private browser tools for developers.
Format JSON, decode JWTs, generate UUIDs, hash text, build ORM models, and transform code snippets locally in your browser.
No uploads
No server logs
No runtime APIs
Browser-only transforms
Featured tools
4 quick startsDevOpsCron Expression GeneratorGenerate, explain, and test common 5-field cron expressions locally.DatabaseCSV to SQL GeneratorConvert CSV rows into SQL INSERT statements with local type inference.Code generationJSON to TypeScript Interface GeneratorGenerate TypeScript interfaces or type aliases from JSON examples.SecurityJWT DecoderDecode JWT header and payload locally. Signatures are not verified.
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Fast utilities by workflow
AI developmentPrompt Optimizer1 local toolCode generationDDL to SQLAlchemy, Log Regex4 local toolsDatabaseCSV to SQL1 local toolDevOpsCompose Builder, Cron Generator2 local toolsEncodingBase64, URL2 local toolsFormattingJSON1 local toolIdentifiersUUID1 local toolSecurityJWT, Hash2 local toolsTextLine Break Cleaner1 local tool
All local tools
Browse every PureToolkit tool
Code generationSQL DDL to SQLAlchemy ORM ConverterConvert PostgreSQL CREATE TABLE DDL into SQLAlchemy 2.0 ORM models.Open toolAI developmentSystem Prompt Token OptimizerClean long system prompts and estimate approximate token savings locally.Open toolDevOpsDocker Compose Boilerplate BuilderGenerate stack-specific Docker Compose boilerplate, env examples, and commands.Open toolCode generationRegex Log Pattern GeneratorGenerate safe named-capture extraction regex patterns for common log formats.Open toolCode generationJSON to Pydantic v2 Model GeneratorGenerate Pydantic v2 BaseModel classes from JSON examples.Open toolDevOpsCron Expression GeneratorGenerate, explain, and test common 5-field cron expressions locally.Open toolDatabaseCSV to SQL GeneratorConvert CSV rows into SQL INSERT statements with local type inference.Open toolTextRemove Line Breaks from TextClean copied text by removing line breaks, normalizing spaces, or extracting emails and URLs.Open toolCode generationJSON to TypeScript Interface GeneratorGenerate TypeScript interfaces or type aliases from JSON examples.Open toolFormattingJSON Formatter and Escaped JSON CleanerFormat, validate, minify, and unescape escaped JSON strings locally in your browser.Open toolEncodingBase64 Encoder and DecoderEncode and decode Unicode text as Base64 entirely in the browser.Open toolEncodingURL Encoder and DecoderEncode or decode URL components and full URL strings without network requests.Open toolSecurityJWT DecoderDecode JWT header and payload locally. Signatures are not verified.Open toolSecuritySHA Hash GeneratorGenerate SHA-256, SHA-384, and SHA-512 digests with the browser Web Crypto API.Open toolIdentifiersUUID GeneratorGenerate random UUID v4 values and deterministic UUID v5 values locally.Open tool