A workspace, not an obstacle course.
Choose a tool, adjust the details, download your result. No account wall between you and a small win.
A LITTLE LESS FRICTION. A LOT MORE DONE.
Small tasks.
Big possibilities.
The everyday toolkit for whatever’s next. Make an image brighter, turn photos into a PDF, or bring a messy file into shape. All in your browser.
Free to use. No sign-up. Your files stay with you.
Try the slider. A small change makes a difference.
On your deviceTool files never leave your browser.
Open and freeNo account. No subscription required.
Choose your languageFind your language in the footer.
THE RIGHT TOOL, RIGHT HERE
What can we make easier?
Useful little tools, thoughtfully made. Pick a task and get on with your day.
Browse every tool by category
Choose a category to reveal its complete list. All tools have their own instructions, supported formats and limits.
Image tools36 tools
Adjust brightness, resize, crop, compress and convert JPG, PNG and WebP images in your browser.
View category- Image brightness
- Image contrast
- Batch image resizer
- Crop image
- Rotate image
- Flip image
- Compress images to a target size
- Batch image to JPG converter
- Batch image to PNG converter
- Batch image to WebP converter
- Grayscale image
- Add image watermark
- Blur part of an image
- Image saturation
- Invert image colors
- Sepia image
- Image threshold
- Posterize image
- Pixelate part of an image
- Sharpen image
- Image vignette
- Image warmth
- Gamma correction
- Shift image hue
- Image opacity
- Round image corners
- Add image border
- Add image padding
- Trim transparent pixels
- Image pixel color
- Extract image palette
- Image information
- Image to ICO
- Image to BMP
- Image contact sheet
- Transparent signature PNG
PDF tools24 tools
Turn images into a PDF, combine documents and organize pages without uploading your files.
View category- Images to PDF
- Merge PDF
- Split PDF
- Rotate PDF
- Remove PDF pages
- Reorder PDF pages
- PDF metadata viewer
- Add PDF page numbers
- Add PDF watermark
- Insert blank PDF pages
- Duplicate PDF pages
- PDF multiple pages per sheet
- Crop PDF margins
- Resize PDF pages
- Edit PDF metadata
- Clear PDF metadata
- Interleave PDF pages
- PDF to text
- PDF to PNG
- PDF to JPG
- PDF to WebP
- Flatten PDF to images
- PDF bookmark list
- Place a signature on PDF
File & data converters20 tools
Convert CSV and JSON, encode images and bundle your files into a ZIP on your device.
View category- CSV to JSON
- JSON to CSV
- Create ZIP
- Image to Base64
- CSV to TSV
- TSV to CSV
- Transpose CSV
- Extract CSV columns
- Remove duplicate CSV rows
- JSON to YAML
- YAML to JSON
- JSON to XML
- XML to JSON
- JSON Lines to JSON
- JSON to JSON Lines
- Inspect ZIP contents
- Extract a file from ZIP
- Text encoding converter
- DWG viewer (2D preview)
- Bulk file renamer
Text tools28 tools
Count, clean, reorder and reformat your text without sending it anywhere.
View category- Word counter
- Text case converter
- Remove duplicate lines
- Sort lines
- Clean whitespace
- Find and replace
- Lorem ipsum generator
- Reverse text
- URL slug generator
- Text line difference
- Number text lines
- Line prefix and suffix
- Filter text lines
- Shuffle text lines
- Repeat text
- Wrap text lines
- Word frequency
- Remove diacritics
- Unicode normalization
- Text to code points
- Code points to text
- Text to Morse code
- Morse code to text
- HTML to plain text
- SRT to VTT
- VTT to SRT
- Shift subtitle timing
- Markdown to safe HTML
Developer tools36 tools
Format JSON, encode text, generate UUIDs and passwords, and calculate hashes in your browser.
View category- JSON formatter
- JSON minifier
- Base64 encode
- Base64 decode
- URL encode
- URL decode
- HTML escape
- HTML unescape
- UUID generator
- Password generator
- SHA-256 hash
- Unix timestamp converter
- URL parser
- Query string builder
- Query string parser
- JWT decoder
- Regular expression tester
- JSON difference
- Sort JSON keys
- Flatten JSON
- Unflatten JSON
- Escape JSON string
- Unescape JSON string
- Text to hexadecimal
- Hexadecimal to text
- Text to binary
- Binary to text
- Number base converter
- File checksum
- HMAC generator
- JSON to TypeScript
- IPv4 subnet calculator
- Cron expression inspector
- CSS px rem em converter
- Remove URL tracking parameters
- Base64 to file
Color tools13 tools
Convert color values and check the contrast of foreground and background colors.
View categoryCalculators & units21 tools
Convert units, compare dates and calculate numbers locally.
View category- Length converter
- Mass converter
- Temperature converter
- Area converter
- Volume converter
- Speed converter
- Data size converter
- Number statistics
- Percentage calculator
- Fraction calculator
- Simplify ratio
- Date difference
- Add or subtract days
- Time zone converter
- Duration calculator
- Age calculator
- Aspect ratio calculator
- Random integer generator
- Roman numeral converter
- Scientific expression calculator
- Business day calculator
Excel tools43 tools
Unprotect authorized sheets, convert spreadsheets and clean table data on your device.
View category- Unprotect Excel sheets
- Unprotect workbook structure
- Remove read-only recommendation
- Excel protection report
- Unhide Excel sheets
- Unhide Excel rows and columns
- Freeze Excel panes
- Excel print settings
- Remove Excel hyperlinks
- Excel metadata viewer
- Clear Excel metadata
- Excel to CSV
- CSV to Excel
- Excel to JSON
- JSON to Excel
- Excel to TSV
- TSV to Excel
- Excel to HTML table
- Excel to Markdown
- Excel to ODS values
- ODS to Excel values
- XLS to XLSX values
- Excel workbook information
- Merge Excel files (values)
- Split Excel sheets (values)
- Extract Excel sheet (values)
- Append Excel rows
- Remove duplicate Excel rows
- Remove empty Excel rows
- Remove empty Excel columns
- Sort Excel rows
- Filter Excel rows
- Select Excel columns
- Transpose Excel values
- Trim Excel cell text
- Find and replace Excel text
- Excel formula report
- Excel formulas to saved values
- Compare Excel cell values
- Excel column statistics
- Excel table to PDF
- Split Excel by column value
- Remove Excel opening password
QR & barcode tools6 tools
Create QR codes, read QR images and generate barcodes locally.
View categoryAudio tools8 tools
Trim, join and transform supported audio into WAV copies.
View categorySEO & web tools10 tools
Create web metadata and inspect pasted HTML without crawling a server.
View categoryLESS FRICTION BY DESIGN
Your task. Your files. Your time.
Your files don’t need a round trip.
Image edits, PDF operations and conversions happen on your device. We don’t upload tool inputs to a processing server.
Clear about what works.
Every tool explains its supported formats and limits. Keep your original, preview the result and download only when you’re ready.
FROM TO-DO TO DONE
Three steps. One less thing.
Bring what you’re working on
Choose a file or paste your text into the tool you need.
Make it yours
Set the size, format, order or other details. Process locally.
Take it with you
Review the output, download it and get back to your project.
A LITTLE KNOW-HOW
Better files start with good choices.
Short, practical guides for the things you do every day.
JPG, PNG or WebP: choose the right image format
Choose a format for photos, screenshots and transparent graphics, then check quality and file size before sharing.
Read the guideCombine images into a PDF that is ready to share
Put pictures in the right order, choose a page size and avoid common readability mistakes when making an image-based PDF.
Read the guideWhat private browser-based file processing means
Understand the difference between local file processing and website traffic, and review your downloads before sharing them.
Read the guideAre these tools really free?
Yes. The tools currently available on asdftools are free to use without creating an account. Each tool lists its supported formats and limits.
Do you upload or keep my files?
No tool uploads your files or text to our server. Processing happens in your browser. Closing or refreshing the page clears the workspace. Website access logs and messages you choose to send through Contact are separate; our privacy notice explains them.
Can I use asdftools on my phone?
Yes, with a recent browser. Large images, long PDFs and ZIP files need more memory, so a desktop may work better. Tool-specific size limits help keep processing manageable.
Are the tools powered by AI?
The tools available today use local, deterministic processing rather than a live AI model. We use AI-assisted development and are exploring optional AI workflow guidance. Future AI features will be clearly labeled before you choose to use them.
Make room for the work that matters.
Let the small tasks be small.