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Finish-first workspace
Finish the whole job, not just one tool.
Workflow Studio turns FastTool from a directory into a repeatable workspace. Pick the real job, follow reviewed tools in the right order, check the output before copying, and keep progress locally in this browser without creating an account.
7 repeat workflows for common browser tasks
43 reviewed tool links, no unfinished inventory
0 accounts, uploads, or server-side project storage
0 steps completed on this device
What FastTool can do differently
The value is the finished workflow, not the tool count.
Task sequence. Each workflow explains the order: prepare input, run the right tool, verify output, then move to the next practical step.Reviewed-only routing. This page links only to tools that are already promoted in the quality-gated public inventory.Trust checks. Every workflow includes limits and output checks so users know when a browser tool is enough and when it is not.Local continuity. Progress is saved only as step IDs in this browser, so repeat visitors can continue without signup.
Workflow menu
Start with the job you need to finish
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All
Developer data
PDF packets
Images
Writing
Design
Calculations
Security
Developer data
Clean a broken API payload before sharing it
Use this when data arrives as messy JSON, CSV, YAML, encoded text, or a token that needs inspection before a teammate can use it.
Expected output: valid payload Best for API debugging
Format and validate the base payload. Start with the most structured version and fix syntax before converting anything else.
Open JSON Formatter Convert YAML or CSV into the target structure. Keep one known-good sample nearby so the shape does not drift during conversion.
Open YAML to JSON Check tabular data before copying. Verify headers, quotes, and empty fields before accepting the converted JSON.
Open CSV to JSON Test extraction rules against real examples. Use representative positive and negative examples, not only one happy path.
Open Regex Tester Decode support values without pasting secrets. Inspect Base64 or JWT structure, but do not paste live keys or private session tokens.
Open Base64 Tool
PDF and documents
Prepare a document packet that opens correctly
Use this when source files need to be merged, converted, compressed, or split before sending.
Expected output: sendable PDF Browser-first document work
Convert source material when needed. Turn HTML, spreadsheet, or deck content into PDF before combining files.
Open HTML to PDF Merge the packet in the intended order. Keep originals unchanged and name the final file clearly.
Open PDF Merger Extract text or images only when useful. Use extraction for review and reuse, not as a substitute for reading the final PDF.
Open Text Extractor Compress after the packet is final. Compression should not happen before all pages are in the correct order.
Open PDF Compressor Open the final file before sending. Check page count, readable text, and whether images still look acceptable.
Open PDF Splitter
Image publishing
Make images lighter without making them look cheap
Use this before uploading visuals to a website, form, store, deck, or document.
Expected output: smaller images CLS and page weight friendly
Resize to the real display size first. Do not compress a 4000 px image when the page only needs 1200 px.
Open Image Resizer Batch resize repeated assets consistently. Use the same width rules for a group so the page layout stays predictable.
Open Bulk Resizer Choose the right format for the job. Use WebP or JPG for photos and PNG when transparency matters.
Open JPG to WebP Compress last and compare visually. Check important edges, text, faces, product details, and gradients at 100% zoom.
Open Image Compressor Create fallback formats when required. Some upload forms still require JPG even when WebP is better for web pages.
Open WebP to JPG
Writing and publishing
Check copy before it goes live or gets sent
Use this for short posts, landing copy, email drafts, documentation, summaries, and character-limited fields.
Expected output: cleaner text Good for publishing checks
Measure length before editing. Record words, characters, lines, and reading time before cutting or expanding.
Open Word Counter Check whether the text is easy to scan. Improve sentence length and structure without removing useful detail.
Open Readability Checker Summarize source notes as a draft only. Do not treat an extractive summary as a fact-checking authority.
Open Text Summarizer Convert format or case after the content is stable. Move Markdown, headings, or casing only after the wording is final.
Open Markdown to HTML Read the final version once. Look for awkward transitions, broken links, and misleading claims before copying.
Open Case Converter
Design and UI
Choose colors that survive real UI use
Use this when a color needs to look good, remain readable, and export cleanly into CSS.
Expected output: usable color system Accessibility-aware
Pick or sample the base color. Start from the real brand, product image, or interface state instead of a random color.
Open Color Picker Generate palette options. Choose harmony based on the interface need, not only visual novelty.
Open Palette Generator Verify contrast for normal and small text. Check light and dark surfaces separately before copying CSS.
Open Contrast Checker Export CSS only after contrast passes. Do not use color alone to communicate error, success, or warning states.
Open CSS Gradient Generator Check the visual frame size. Confirm hero, card, thumbnail, or social crop dimensions before publishing.
Open Aspect Ratio Calculator
Calculations
Answer a number question without making a spreadsheet
Use this for fast percentage, unit, age, finance, loan, mortgage, BMI, or scientific calculations where the assumption matters.
Expected output: transparent estimate Assumption-first
Write down the input assumption. The calculator is only as useful as the numbers and units entered.
Open Percentage Calculator Normalize units before comparing results. Convert units first so follow-up calculations are not mixing systems.
Open Unit Converter Use finance calculators as scenarios, not advice. Change one variable at a time so the result explains the driver.
Open Compound Interest Compare payment, term, and total cost. Do not trust monthly payment alone when total interest matters.
Open Loan Calculator Treat health outputs as screening context. Use BMI as a broad estimate only, not a medical decision.
Open BMI Calculator
Security utilities
Generate or inspect technical values without exposing secrets
Use this for passwords, UUIDs, hashes, tokens, Base64, and URLs when you need a quick browser utility with clear boundaries.
Expected output: safe technical value No secret storage
Generate strong random values. Use a password manager for real accounts and store the result there, not in this page.
Open Password Generator Create identifiers separately from secret values. UUIDs are identifiers, not authentication secrets.
Open UUID Generator Compare hashes using the same input encoding. Whitespace and line endings change hashes, so normalize the input first.
Open Hash Generator Inspect token structure without trusting the token. Do not paste live private tokens; decoding is not the same as validation.
Open JWT Decoder Encode values before placing them in URLs. Check reserved characters before copying into query strings.
Open URL Encoder
Portable session
Copy the checklist you actually used
Copy current session
Workflow Studio stores only completed step IDs and the last selected workflow in this browser. It does not store pasted text, files, private notes, tokens, passwords, or document names.