Useful tools without the clutter
Resize an image, format JSON, compare text, generate hashes, work with subtitles, or inspect media from one consistent toolbox.
Voice2Sub Free Tools
Free Browser Tools
Find a tool for your file or text, choose the input and get to work. Your source content is processed on this device.
Free · No account · Source content stays local
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Image tools
Resize, compress, and convert common image formats locally.
3 toolsView all →
Image ResizerImage tools
Change JPG, PNG or WebP dimensions by pixels, percentage or an edge length. Keep the source format.
Image CompressorImage toolsReduce image file size without changing dimensions or format. Compare the result locally before downloading.
Image ConverterImage toolsConvert HEIC, AVIF, WebP and other supported images to JPG, PNG, WebP or AVIF. Your files stay on this device.
Text tools
Count, compare, and clean text instantly in your browser.
3 toolsView all →
Word & Character CounterText tools
Count words, visible characters, code points, lines and paragraphs as you type. Keep the text local.
Text Diff CheckerText toolsCompare original and changed text, inspect line differences and choose how whitespace or case should be compared.
Remove Duplicate LinesText toolsRemove repeated lines while keeping the first original occurrence and its position. Compare case or surrounding spaces explicitly.
Developer tools
Format, encode, hash, and generate common developer data locally.
6 toolsView all →
QR Code GeneratorDeveloper tools
Create a static QR code for text, a link, Wi-Fi or contact details. Download PNG or SVG without sending the payload away.
JSON Formatter & ValidatorDeveloper toolsFormat, minify and validate strict JSON. See duplicate-key, numeric and Unicode risks before copying the result.
Base64 Encoder / DecoderDeveloper toolsEncode or decode text and files using Base64, Base64url or a Data URL. Process the bytes locally.
URL Encoder / DecoderDeveloper toolsEncode or decode URL components, full URIs and form/query text. Handle Unicode and percent escapes explicitly.
Checksum / Hash GeneratorDeveloper toolsCalculate SHA-256, SHA-384 or SHA-512 for text or a file, then compare it with an expected hash. Files stay local.
UUID GeneratorDeveloper toolsGenerate UUID v4 or time-ordered v7 values, or inspect an existing UUID. Choose a valid batch count from 1 to 100.
Media tools
Extract audio or subtitles and inspect media-file details.
3 toolsView all →
Video to AudioMedia tools
Select an audio track from a local video and save the original stream or convert it to MP3, WAV, M4A or FLAC.
Extract Embedded SubtitlesMedia toolsFind embedded subtitle tracks in a local media file and save a supported text track. No media upload is needed.
Media Info & Codec InspectorMedia toolsInspect a local file’s container, audio, video and subtitle streams. Copy the report or save the details.
Media tools may take a few seconds to prepare the first time you use one.
Subtitle tools
Convert, repair, sync, split, and review subtitle files.
5 toolsView all →
Subtitle ConverterSubtitle tools
Convert subtitle formats, preview cues and review styling or timing losses before export. Subtitle content stays in your browser.
Subtitle Fixer & ValidatorSubtitle toolsCheck subtitle timing, overlaps, duplicates and reading speed. Review the affected cues before applying safe fixes.
Subtitle SplitterSubtitle toolsSplit long subtitle cues into shorter segments while preserving text order and respecting the original timeline.
Subtitle Time Shifter & SyncSubtitle toolsMove subtitles earlier or later, correct drift with two reference points, or convert timing between frame rates.
Subtitle Reading Speed CheckerSubtitle toolsCheck subtitle characters per second, long lines, short cues and overlaps with locale-aware text counts.
Browser-first privacy
Your source content is processed in this browser, not uploaded for processing. The browser may download a processing engine from Voice2Sub’s CDN. Those engine requests do not contain your source file. Tool Privacy.
Choose the right next task
Need a different format, fewer bytes or different dimensions? Start with one task, then follow the related tool links when your result needs another step.