Local web tools
Fast Client-Side Utilities
Free, fast, and completely secure web tools. We protect your data by processing everything directly in your browser.
MP3 to WAV / WAV to MP3
Convert audio between MP3 and WAV locally in the browser, then preview and download the exported file.
Merge Audio
Combine several audio files into one sequence and download the merged result from the browser.
Audio Normalizer
Adjust audio loudness to a more consistent level before using the file in a project or upload.
Audio Speed and Pitch
Change playback speed or pitch for an audio file and preview the result before export.
Trim Audio
Cut a selected part of an audio file in the browser and export only the segment you need.
Tap BPM Counter
Tap along with a beat to estimate BPM quickly without installing a dedicated music utility.
Case Converter
Convert text case formats between Title Case, UPPERCASE, lowercase, sentence case, and URL-friendly slugs.
Photo in Circle
Crop and adjust your photos into circular avatars with custom borders, colored padding, or linear gradients.
Code Formatter
Beautify and clean up HTML, CSS, JavaScript, and TypeScript code structures with custom spacing.
Collage Maker
Arrange multiple images on standard paper formats (A4, A3, Letter) for physical printing with custom offsets, rotations, and crop marks.
Countdown Timer
Run a readable countdown timer with start, pause, reset, and a short completion signal.
Image Compressor
Compress images to reduce size while retaining resolution, or adjust resolution scaling dynamically.
Image Converter
Convert graphical files (PNG, JPEG, WebP, GIF, BMP) to other formats entirely offline using browser Canvas API.
Image Cropper
Crop your images interactively using drag-and-drop boundary handles with exact aspect ratio guides.
Image Resizer
Resize images to custom width/height constraints with aspects ratio locking/unlocking support.
JSON Formatter
Format, validate, sort, and minify JSON data payloads with clear syntax error highlights.
Markdown Converter
Convert Markdown notation formatting into semantic HTML documents, and convert raw HTML back to clean Markdown strings.
Metronome
Set a BPM and keep a steady click for music practice, timing checks, or rehearsal work.
Numbers to Words
Convert numeric digits into fully spelled-out words with optional currency formats (USD, EUR, UAH) and smart sentence capitalization.
PDF Compressor
Compress PDF file sizes down by optimizing inner graphic resources, structural streams, and metadata tables.
QR Code Generator
Generate custom styled QR codes from text links, emails, and passwords locally in your browser.
QR Code Scanner
Scan and decode QR codes instantly from uploaded image files or live webcam video feeds.
Replace in Text
Replace occurrences of text or regular expressions with smart options like case-preservation and line boundary filters.
Find in Text
Locate phrases or use advanced Regular Expressions inside text blocks with line-number matching and sentence boundary settings.
Remove Silence from Audio
Detect quiet parts of a recording and remove unnecessary silence before exporting the cleaned result.
Stopwatch
Measure elapsed time with start, pause, reset, and lap-friendly controls in a clean browser view.
Tone Generator
Generate a clean tone at the selected frequency for testing, tuning, lessons, or audio checks.
Voice Recorder
Record microphone audio in the browser, listen back immediately, and download the take without uploading it.
Audio Waveform Visualizer
Visualize an audio file as a waveform so peaks, pauses, and structure are easier to inspect.
Words to Numbers
Translate written-out numeric wording back into numerical values and currency digit structures.