Prepare a campaign
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100 tools · No required signup
Everyday tools to format, convert and calculate
Clean a data export, make a file easier to share, generate a QR code, or work out a cost. Choose a tool and get a result you can use.
Each tool includes instructions, a worked example, limitations and a processing note. Most operations run in your browser.
Browse by categoryStart with a tool
What are you working on?
Start with a useful workflow. All of these tools are free.
Clean a data export
Remove repeated records, convert the format, and inspect the result.
Publish readable visuals
Check color contrast, reduce image size, and create share-ready assets.
Browse all tools
Open a category to find a tool.
Developer (33)
- CSV Duplicate RemoverDeduplicate CSV rows by all fields or selected columns.
- JSON FormatterFormat, beautify, minify, validate JSON.
- SQL FormatterPrettify complex SQL queries.
- Regex TesterTest regex patterns in real-time.
- Cron ParserParse cron expressions to human text.
- JWT DecoderDecode and inspect JWT tokens.
- Markdown PreviewLive markdown editor & preview.
- Hash GeneratorBinary-safe MD5 and SHA file or text checksums.
- UUID GeneratorGenerate and validate UUID v4 and time-ordered v7.
- Base64 EncoderEncode and decode Base64.
- URL EncoderEncode/decode URLs and query strings.
- HTML EncoderEncode/decode HTML entities.
- Hex ConverterText to hex, hex to text.
- Binary ConverterText to binary and back.
- ROT13 CipherROT13, ROT47, Caesar cipher.
- JSON to TypeScriptGenerate TS interfaces from JSON.
- JSON to C#Generate C# classes from JSON.
- JSON to CSVConvert JSON arrays to CSV files.
- CSV to JSONConvert CSV/Excel data to JSON.
- JSON to SQLGenerate INSERT statements.
- JSON to YAMLConvert JSON to YAML format.
- Webhook TesterGenerate URLs & inspect requests.
- Text DiffCompare text side by side.
- SVG OptimizerMinify and clean SVG code.
- Unit ConverterPX to REM, Hex to RGB, Unix to Date.
- JSON Schema GeneratorInfer JSON Schema from sample JSON.
- JSON Schema ValidatorValidate JSON against Draft 2020-12 schemas.
- YAML to JSONConvert YAML documents to JSON locally.
- URL ParserInspect URL parts and query parameters.
- JSONPath TesterQuery JSON with supported path selectors.
- Query String ConverterConvert URL query parameters to and from JSON.
- HTTP Status ReferenceSearch HTTP response codes and meanings.
- MIME Type LookupFind Content-Type values by file extension.
SEO & Marketing (8)
- ROAS & Break-Even CalculatorCalculate ad return, contribution and break-even revenue.
- UTM BuilderBuild and save campaign tracking URLs.
- Schema Markup GeneratorGenerate validated JSON-LD schema markup.
- Meta Tag GeneratorCreate SEO, OpenGraph, and Twitter meta tags.
- SERP PreviewPreview Google-style search snippets.
- Robots.txt GeneratorBuild and validate robots.txt directives.
- XML Sitemap GeneratorCreate XML sitemaps from a URL list.
- Hreflang GeneratorGenerate alternate-language hreflang tags.
AI & Prompt (2)
Network (8)
- Network DiagnosticsDNS, IP, WHOIS, SSL, Headers, Subnet.
- DNS LookupA, AAAA, MX, TXT, NS records.
- My IP AddressYour public IP and browser info.
- IP Address LookupGeolocation, ISP, and ASN for any IP.
- WHOIS / RDAP LookupDomain registration info.
- SSL Certificate CheckerInspect SSL cert chain.
- HTTP Headers CheckerInspect response headers.
- Subnet CalculatorCIDR, netmask, hosts.
DevOps (11)
- Chmod Permission CalculatorConvert Unix permission bits between octal and symbolic notation.
- .env Example GeneratorCreate a values-free .env.example and check assignment syntax.
- Cron ParserParse cron expressions to human text.
- Hash GeneratorBinary-safe MD5 and SHA file or text checksums.
- JSON to YAMLConvert JSON to YAML format.
- YAML to JSONConvert YAML documents to JSON locally.
- Cron Expression BuilderBuild schedules with visual cron controls.
- DNS LookupA, AAAA, MX, TXT, NS records.
- SSL Certificate CheckerInspect SSL cert chain.
- HTTP Headers CheckerInspect response headers.
- Subnet CalculatorCIDR, netmask, hosts.
PDF & Images (15)
- PDF to ImageConvert PDF pages to PNG/JPG.
- PDF Text ExtractorExtract PDF text to TXT or Word-readable RTF.
- Image to PDFCombine images into PDF.
- PDF Merge & SplitCombine or extract PDF pages.
- PDF MetadataView and clean PDF metadata.
- PDF to CSV/ExcelExtract tables from PDF.
- VTT/SRT to CSVSubtitle files to CSV/JSON.
- Image OCRExtract text from images with AI.
- Image CompressorReduce image size with quality control.
- Image Format ConverterConvert and resize JPG, PNG, and WebP images locally.
- EXIF StripperRemove GPS and metadata from photos.
- QR GeneratorGenerate QR codes. Download PNG/SVG.
- Barcode GeneratorCreate downloadable Code 128 barcodes locally.
- Favicon GeneratorCreate ICO and PWA icons.
- Color PickerHEX, RGB, HSL color converter.
Creator (6)
Writing & Text (7)
- Word CounterCount words, chars, reading time.
- SMS CounterGSM-7/Unicode SMS segment counter.
- Case ConverterUPPER, lower, Title, camelCase.
- Timestamp ConverterUnix epoch to date and back.
- Lorem IpsumGenerate placeholder text.
- Text CleanerStrip formatting, fix quotes.
- Tone FormalizerMake text professional with AI.
Finance & Productivity (14)
- SimpleTaskToolFull-featured task manager with categories.
- Task ManagerSimple todo list with priorities.
- Loan CalculatorEMI, amortization schedule.
- Age CalculatorCalculate exact age, total days, and weeks.
- Percentage CalculatorCalculate percentages, ratios, and percentage change.
- SIP CalculatorProject monthly SIP investment growth and step-up.
- Compound Interest CalculatorCalculate compound growth and recurring contributions.
- VCF to ExcelConvert vCard contacts to CSV.
- Meeting CostCalculate meeting expenses.
- Subscription TrackerTrack recurring costs.
- Time EstimatorEstimate task duration.
- Invoice GeneratorCreate and print invoices with local drafts.
- GST CalculatorCalculate inclusive or exclusive GST and tax split.
- Profit Margin CalculatorCompare gross margin and markup.
Automate a supported task
The developer API supports JSON, text, hashes, QR codes and other documented utilities. Anonymous use allows 10 requests per day; a valid free API key allows 100. PDF conversions are browser tools and are not available through this API.
Read the API documentationBefore you start
Do I need an account?
The tools in the public catalog are free to use without a required account. Accounts provide optional saved-work features; the developer API has separate usage limits.
Are my files or text uploaded?
Most tools process their working input in your browser. Network tools and optional AI actions send data to a server when you run them. Read the processing note on each tool before using confidential data. Account sync is a separate, optional action.
Can I use the tools offline?
Previously cached local tools may work offline, depending on browser storage and which assets have loaded. Network diagnostics, AI actions, accounts, APIs, and uncached tools need a connection.
What if a result looks wrong?
Check the worked example and limitations on that tool. If the problem remains, send a bug report with a small nonsensitive input, the expected result, and what actually happened.
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