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HereBytes
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在瀏覽器中轉換、壓縮、檢查與修復檔案,來源檔案不需上傳。

Drop any supported file hereWorks with images, PDFs, MP4 or MOV videos, and ZIP archives.
No file uploads No transfer wait Batch processing
Start with the problem

You do not need to know the tool name.

Choose what is getting in your way and open the most useful next step.

One Runtime, many file capabilities

Start with images. Go beyond images.

Each page solves one clear file problem using the shared local Runtime.

File type
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78 tools found

Compress Images

Shrink JPEG, PNG, and WebP images in a batch while choosing the balance between file size and visible quality.

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Batch Compress Images

Compress a large selection or folder of images, review each result, and download the completed batch together.

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Convert Images

Convert JPEG, PNG, WebP, and AVIF images in a batch with a clear output format and quality setting.

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Convert Images to AVIF

Turn JPEG, PNG, or WebP images into AVIF files for modern websites and storage-efficient delivery.

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Convert HEIC to PNG

Open HEIC or HEIF photos and export lossless PNG copies for editing, design, or software compatibility.

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Convert PNG to JPG

Turn PNG images into widely supported JPG files and replace transparent areas with a clean white background.

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Convert AVIF to JPG

Convert AVIF images into compatible JPG files for older editors, forms, messaging apps, and websites.

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Convert AVIF to PNG

Decode AVIF images into PNG files when you need lossless pixels, transparency, or broader editing support.

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Crop Images

Crop an image to 1:1, 4:3, or 16:9 and download a new copy with the centered composition.

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Rotate Images

Rotate an image by 90°, 180°, or 270° and optionally flip it horizontally or vertically.

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Compress GIF

Reduce the color palette across every GIF frame while preserving the animation and frame timing.

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Extract GIF Frames

Render every GIF frame in playback order and download the complete sequence as PNG files in a ZIP.

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Convert Image to Base64

Create a Base64 data URL with the correct image MIME type, then copy it or download it as text.

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PNG to WebP

Convert PNG images to smaller WebP files in a batch while preserving transparent areas.

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Convert JPG to WebP

Convert one or many JPG photos to modern WebP files with an adjustable quality setting.

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Resize Images

Set a target width or height for a batch of images and keep their original proportions automatically.

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Remove Image Metadata

Re-encode JPEG, PNG, and WebP images to remove EXIF and other non-pixel metadata before sharing.

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Remove Photo Location

Remove GPS, EXIF, and other non-pixel metadata by rebuilding a clean copy of each photo.

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Batch Clean Image Metadata

Remove EXIF, GPS, and other hidden metadata from many images and download the cleaned batch together.

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Extract Text from Images

Experimental

Recognize English or Simplified Chinese printed text in an image after installing the optional local OCR language data.

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Remove a Portrait Background

Experimental

Separate a person from the background with an optional local model and export a transparent PNG for review.

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Convert HEIC to JPG

Turn HEIC or HEIF photos into widely supported JPG files for forms, editors, websites, and messaging apps.

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Repair JPEG

Experimental

Remove junk bytes, restore a missing end marker, and re-save any JPEG pixels the browser can still read.

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Upscale Images

Enlarge an image up to four times with high-quality interpolation without pretending to invent lost detail.

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Smart Crop Images

Compare candidate crops using edges and color saliency, then export a common ratio with more useful content in frame.

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Blur Faces in Photos

Experimental

Suggest face regions and apply a strong blur, with a required visual check because automatic detection can miss people.

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Convert Images to PDF

Arrange JPEG, PNG, or WebP images in order and create one PDF with A4 or original-size pages.

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Extract Audio from Video

Take the main audio track from an MP4 or MOV and save it as M4A, copying compatible audio without re-encoding.

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Mute Video

Remove audio tracks from an MP4 or MOV and keep compatible video data unchanged in a new MP4.

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Convert MP4 to MP3

Decode the main audio track from an MP4 or MOV and encode a standard MP3 file for listening or sharing.

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Trim Video

Choose a start and end time, preview the actual keyframe-safe interval, and save a trimmed MP4 without re-encoding compatible tracks.

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Compress Video

Reduce MP4 or MOV size by lowering resolution or bitrate while preserving a compatible primary audio track.

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Diagnose and Repair MP4 or MOV

Experimental

Inspect a damaged recording, explain its recoverability, and rebuild only the strictly supported cases with verification.

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Merge Videos

Place compatible video clips in order and export one MP4 with a shared resolution and frame rate.

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Convert Video to GIF

Choose a time range, width, and frame rate to create an animated GIF from an MP4, MOV, or WebM video.

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Extract Video Frames

Sample frames from a video at a chosen rate and download the resulting PNG sequence in a ZIP.

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Rotate Video

Rotate the visible video by 90°, 180°, or 270° and export a new MP4 with the orientation baked in.

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Change Video Speed

Change video playback speed and export a new MP4 with adjusted timing rather than relying on a player setting.

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Resize Video

Set a smaller output width, preserve the aspect ratio, and export a resized MP4 without upscaling.

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Convert Video

Convert supported video input into an MP4 with browser-available video and audio encoders.

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MOV to MP4

Repackage compatible MOV tracks directly into MP4, or re-encode only when the target container requires it.

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Take a Video Screenshot

Choose a time in a video and export that visible frame as a PNG image.

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Make MP4 Start Faster

Move MP4 initialization metadata to the front of the file for progressive web playback without changing media quality.

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Remove Video Metadata

Rebuild an MP4 or MOV without titles, author fields, cover art, and other optional container metadata.

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Convert WebM to MP4

Convert WebM video into a broadly accepted MP4 using the encoders available in the current browser.

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Compress Audio

Choose a lower bitrate and export a smaller audio file for speech, music sharing, or limited upload sizes.

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Trim Audio

Set start and end times and export the selected portion as a new audio file.

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Merge Audio

Arrange two or more audio files in order and export one continuous recording.

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Convert Audio

Convert supported audio between MP3, WAV, and M4A with an explicit output format and bitrate.

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Change Audio Volume

Raise or lower audio gain, limit clipping, and export the adjusted recording as a new file.

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Reduce Audio Noise

Apply a smooth noise gate to reduce low-level room noise while preserving louder speech and sound.

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Transcribe Audio

Experimental

Install the optional Whisper tiny model, recognize speech on this device, and download an editable transcript for review.

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Browse Archive Contents

Experimental

Open ZIP, RAR, 7-Zip, or TAR archives, search their contents, preview safe files, and extract only what you need.

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Create a ZIP File

Choose multiple files and place them into a standard ZIP archive for storage, transfer, or upload.

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Unzip Files

Extract a ZIP into a chosen folder when supported, or download the extracted contents as a compatibility ZIP.

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Extract Archive

Experimental

Extract supported archives to a folder or repack their safe file contents into a standard ZIP download.

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Decompress GZIP

Remove the GZIP layer from a .gz file and download the decompressed bytes.

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Decompress Zstandard

Decode a Zstandard .zst file and download its original uncompressed bytes.

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Extract TAR.GZ

Experimental

Decompress GZIP, safely extract the TAR members, and download the compatible files together as ZIP.

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Extract TAR ZST

Experimental

Decompress Zstandard, safely extract the TAR members, and download the compatible files together as ZIP.

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Recover Files from a Damaged ZIP

Experimental

Scan local ZIP headers and recover complete file members when the central directory is missing or damaged.

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Compress PDF

Optimize a PDF without losing its text layer, or recompress scanned pages for a smaller file.

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Convert PDF to Images

Turn every PDF page into a JPG or PNG and download them together.

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Rotate PDF Pages

Rotate all pages by 90°, 180°, or 270° and save the corrected document as a new PDF.

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Crop PDF Pages

Reduce each page crop box by a chosen percentage without redrawing the underlying PDF content.

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Add a Watermark to PDF

Place a visible semi-transparent text watermark in the center of every PDF page.

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Add Page Numbers to PDF

Start from any positive number and add consecutive page numbers at the bottom of a PDF.

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Repair PDF

Experimental

Try to rebuild readable content from a PDF that no longer opens correctly.

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Password Protect PDF

Add an AES-256 opening password to a PDF before sending it.

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Unlock PDF

Use a password you are authorized to use and export a decrypted PDF copy for easier access.

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Extract Images from PDF

Export the image objects actually referenced by PDF pages instead of taking full-page screenshots.

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Permanently Redact PDF

Rasterize each page and permanently cover a chosen area so the underlying text and vectors are not retained.

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Merge PDF

Put several PDFs into the exact order you need and download one combined document.

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Split PDF

Save only the pages you need, or download every page as a separate PDF.

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Reorder PDF Pages

Preview PDF pages, move them into a new order, and download the rearranged document.

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Remove PDF Metadata

Clear document details and XMP metadata before you share a PDF.

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Delete PDF Pages

Enter page numbers or ranges to delete and save the remaining pages as a new PDF.

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View Large JSON, CSV, and Logs

Build a chunked record index and read only visible JSON Lines, CSV, TSV, log, or text content as you browse.

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