Image Converter
Open tool →Convert images between JPG, PNG, WebP, GIF, BMP and more. Best for changing image format while preserving the useful visual content for a new destination.
64 focused browser tools
Free browser-based file tools
Convert, compress, resize, inspect and verify files entirely in your browser. No account, no upload limits, no software to install.
Image Tools
26 toolsConvert, compress, resize and transform images in every common format - JPG, PNG, WebP, HEIC and more.
Image ConverterImage CompressorImage ResizerWebP to JPG
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PDF & File Tools
10 toolsMerge, split, reorder, rotate and inspect PDF documents without any software installation.
PDF ConverterMerge PDFSplit PDFPDF Page Counter
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Archive Tools
5 toolsCreate, extract and inspect ZIP and GZIP archives entirely in your browser.
Create ZIPExtract ZIPZIP ViewerGZIP Compressor
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Security & Checksum
6 toolsGenerate and verify file hashes, checksums and HMAC signatures to confirm file integrity.
File Hash GeneratorChecksum CompareMD5 ChecksumHMAC Generator
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Video Tools
5 toolsResize short videos for social platforms, extract thumbnails and inspect video metadata.
Video ResizerVideo MetadataThumbnail MakerTikTok Resizer
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Audio Tools
5 toolsConvert, trim and boost audio files between common formats without leaving your browser.
Audio ConverterAudio TrimmerVolume BoosterMP3 to WAV
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Developer & Data Tools
7 toolsFormat, validate and convert JSON, CSV, XML and Base64 data with clean readable output.
JSON FormatterJSON ValidatorJSON to CSVBase64 Encoder
View all developer & data tools
Complete tool directory
What every NEXDOWNLOAD tool does
Choose a utility by the requirement you actually need to meet: format compatibility, file-size limit, pixel dimensions, page organization, integrity checking or structured-data cleanup. These explanations make the directory useful before you open a workspace.
Image Tools
Convert, compress, resize and prepare images.
Image to WebP
Open tool →Convert any image to WebP for smaller file sizes. Best for changing image format while preserving the useful visual content for a new destination.
WebP to JPG
Open tool →Convert WebP images to JPG for maximum compatibility. Best for changing image format while preserving the useful visual content for a new destination.
Image Compressor
Open tool →Reduce image file size while preserving visual quality. Best for reducing image file size for upload limits, email, forms and faster web delivery.
Compress to 20KB
Open tool →Compress any image down to 20KB for strict form limits. Best for reducing image file size for upload limits, email, forms and faster web delivery.
Compress to 50KB
Open tool →Target exactly 50KB for passport and ID photo uploads. Best for reducing image file size for upload limits, email, forms and faster web delivery.
Compress to 100KB
Open tool →Reduce images to under 100KB for online applications. Best for reducing image file size for upload limits, email, forms and faster web delivery.
Compress to 200KB
Open tool →Compress images to 200KB for email and web use. Best for reducing image file size for upload limits, email, forms and faster web delivery.
Image Resizer
Open tool →Resize images to any custom width and height in pixels. Best for matching pixel dimensions and aspect ratios required by websites, social platforms and upload forms.
Resize to 300x300
Open tool →Resize images to a perfect 300x300 square. Best for matching pixel dimensions and aspect ratios required by websites, social platforms and upload forms.
Social Image Resizer
Open tool →Resize images for all major social media platforms. Best for matching pixel dimensions and aspect ratios required by websites, social platforms and upload forms.
GIF Compressor
Open tool →Reduce animated GIF file size without breaking animation. Best for reducing image file size for upload limits, email, forms and faster web delivery.
Favicon Generator
Open tool →Create .ico and PNG favicons from any image or logo. Best for turning a logo or simple image into small favicon assets for websites.
Color Palette Extractor
Open tool →Extract the dominant color palette from any image. Best for sampling dominant colors from an image for design, branding and interface work.
Remove Image Metadata
Open tool →Strip EXIF data and GPS location from photos. Best for removing embedded camera and location metadata before a photo is shared.
Convert Image to JPG
Open tool →Convert PNG, WebP, HEIC and other formats to JPG. Best for changing image format while preserving the useful visual content for a new destination.
Convert Image to PNG
Open tool →Convert JPG, WebP, HEIC and other formats to PNG. Best for changing image format while preserving the useful visual content for a new destination.
JPG to PNG
Open tool →Convert JPG photos to lossless PNG format. Best for changing image format while preserving the useful visual content for a new destination.
PNG to JPG
Open tool →Convert PNG images to smaller JPG files. Best for changing image format while preserving the useful visual content for a new destination.
PNG to WebP
Open tool →Convert PNG to modern WebP for web optimization. Best for changing image format while preserving the useful visual content for a new destination.
WebP to PNG
Open tool →Convert WebP images to PNG with full transparency. Best for changing image format while preserving the useful visual content for a new destination.
HEIC to JPG
Open tool →Convert iPhone HEIC photos to universal JPG format. Best for changing image format while preserving the useful visual content for a new destination.
Instagram Image Resizer
Open tool →Resize images to all Instagram post and story sizes. Best for matching pixel dimensions and aspect ratios required by websites, social platforms and upload forms.
YouTube Thumbnail Resizer
Open tool →Create perfectly sized YouTube thumbnails (1280x720). Best for matching pixel dimensions and aspect ratios required by websites, social platforms and upload forms.
Facebook Cover Resizer
Open tool →Resize images to the correct Facebook cover dimensions. Best for matching pixel dimensions and aspect ratios required by websites, social platforms and upload forms.
Profile Picture Resizer
Open tool →Resize photos to standard profile picture dimensions. Best for matching pixel dimensions and aspect ratios required by websites, social platforms and upload forms.
PDF & File Tools
Merge, split, extract, reorder, rotate and inspect pdf files.
PDF Converter
Open tool →Convert documents to and from PDF format in your browser. Best for organizing or inspecting PDF pages without installing a desktop editor.
File Size Converter
Open tool →Convert between KB, MB, GB and TB file size units. Best for organizing or inspecting PDF pages without installing a desktop editor.
Merge PDF
Open tool →Combine multiple PDF files into one document in the correct order. Best for organizing or inspecting PDF pages without installing a desktop editor.
Split PDF
Open tool →Split a PDF into separate files by page range or every page. Best for organizing or inspecting PDF pages without installing a desktop editor.
Extract PDF Pages
Open tool →Extract specific pages from a PDF into a new document. Best for organizing or inspecting PDF pages without installing a desktop editor.
Delete PDF Pages
Open tool →Remove unwanted pages from a PDF file. Best for organizing or inspecting PDF pages without installing a desktop editor.
Reorder PDF Pages
Open tool →Drag and drop PDF pages into the correct order. Best for organizing or inspecting PDF pages without installing a desktop editor.
Rotate PDF Pages
Open tool →Rotate individual or all pages in a PDF document. Best for organizing or inspecting PDF pages without installing a desktop editor.
PDF Page Counter
Open tool →Count the total number of pages in any PDF file. Best for organizing or inspecting PDF pages without installing a desktop editor.
PDF Metadata Viewer
Open tool →View author, creation date and other PDF metadata. Best for organizing or inspecting PDF pages without installing a desktop editor.
Archive Tools
Create, inspect, extract and compress zip or gzip files.
Create ZIP Archive
Open tool →Bundle multiple files into a single ZIP archive in your browser. Best for working with ZIP or GZIP data directly in the browser.
Extract ZIP Files
Open tool →Unzip and extract the contents of any ZIP archive. Best for working with ZIP or GZIP data directly in the browser.
ZIP Contents Viewer
Open tool →Preview the file list inside a ZIP without extracting it. Best for working with ZIP or GZIP data directly in the browser.
GZIP Compressor
Open tool →Compress a single file using the GZIP algorithm. Best for working with ZIP or GZIP data directly in the browser.
GZIP Decompressor
Open tool →Decompress a .gz file back to its original format. Best for working with ZIP or GZIP data directly in the browser.
Security & Checksum Tools
Calculate hashes, compare checksums and create hmac values.
File Hash Generator
Open tool →Generate MD5, SHA-1, SHA-256 and SHA-512 hashes for any file. Best for checking data integrity with hashes, checksums or keyed message authentication values.
Checksum Compare Tool
Open tool →Compare two checksums to verify file integrity. Best for checking data integrity with hashes, checksums or keyed message authentication values.
CRC-32 Checksum Calculator
Open tool →Calculate the CRC-32 checksum of any file. Best for checking data integrity with hashes, checksums or keyed message authentication values.
MD5 Checksum Generator
Open tool →Generate an MD5 hash for file verification purposes. Best for checking data integrity with hashes, checksums or keyed message authentication values.
Text Hash Generator
Open tool →Hash any text string using MD5, SHA-1, SHA-256 or SHA-512. Best for checking data integrity with hashes, checksums or keyed message authentication values.
HMAC Generator
Open tool →Generate an HMAC signature using a secret key and hash algorithm. Best for checking data integrity with hashes, checksums or keyed message authentication values.
Video Tools
Resize short videos, inspect metadata and capture thumbnails.
Short Video Resizer
Open tool →Resize short video clips for social media platforms. Best for preparing short video files for social sharing, inspection or thumbnail creation.
Video Metadata Inspector
Open tool →View codec, resolution, duration and other video metadata. Best for preparing short video files for social sharing, inspection or thumbnail creation.
Video Thumbnail Maker
Open tool →Extract a frame from a video to use as a thumbnail. Best for preparing short video files for social sharing, inspection or thumbnail creation.
TikTok Video Resizer
Open tool →Resize videos to TikTok's 9:16 vertical format. Best for preparing short video files for social sharing, inspection or thumbnail creation.
Instagram Video Resizer
Open tool →Resize videos for Instagram Reels, Stories and feed posts. Best for preparing short video files for social sharing, inspection or thumbnail creation.
Audio Tools
Convert, trim and adjust common audio files.
Audio Converter
Open tool →Convert audio files between MP3, WAV, OGG, FLAC and more. Best for converting, trimming or adjusting audio locally in a modern browser.
Audio Trimmer
Open tool →Trim audio clips to the exact start and end point you need. Best for converting, trimming or adjusting audio locally in a modern browser.
Audio Volume Booster
Open tool →Increase the volume of quiet audio files. Best for converting, trimming or adjusting audio locally in a modern browser.
MP3 to WAV Converter
Open tool →Convert MP3 audio files to uncompressed WAV format. Best for converting, trimming or adjusting audio locally in a modern browser.
WAV to MP3 Converter
Open tool →Convert WAV files to smaller MP3 format for sharing. Best for converting, trimming or adjusting audio locally in a modern browser.
Developer & Data Tools
Format, validate, encode and convert structured data.
JSON Formatter
Open tool →Format and pretty-print JSON data with syntax highlighting. Best for working with structured text or encoded data without sending the input to a remote conversion service.
JSON Validator
Open tool →Validate JSON syntax and identify errors instantly. Best for working with structured text or encoded data without sending the input to a remote conversion service.
JSON to CSV Converter
Open tool →Convert JSON arrays to CSV spreadsheet format. Best for working with structured text or encoded data without sending the input to a remote conversion service.
CSV to JSON Converter
Open tool →Convert CSV data to structured JSON format. Best for working with structured text or encoded data without sending the input to a remote conversion service.
XML Formatter
Open tool →Format and indent XML documents for readability. Best for working with structured text or encoded data without sending the input to a remote conversion service.
Base64 Encoder
Open tool →Encode text or file data to Base64 format. Best for working with structured text or encoded data without sending the input to a remote conversion service.
Base64 Decoder
Open tool →Decode Base64 strings back to readable text or binary data. Best for working with structured text or encoded data without sending the input to a remote conversion service.
Toolbox reference
How to choose and verify a browser file tool
Use the operation that matches the real requirement, then verify the exact output before relying on it.
Start with the requirement, not the file extension
A good tool choice begins with the destination requirement. If an online form says an image must be under 100KB, the main task is compression, not conversion. If the form says 300 by 300 pixels, resizing is the controlling requirement. If a website does not accept WebP, format conversion is the task. Treating those as separate problems prevents unnecessary processing and makes it easier to verify the result.
The same rule applies outside images. A PDF page-order problem calls for merge, split, extract, delete, rotate or reorder operations rather than a generic converter. A checksum problem requires the correct algorithm and a trusted reference. Developer data tools should be chosen based on whether the job is formatting, validating, encoding or converting structure.
Convert, compress, resize, inspect and verify are different jobs
Conversion changes representation, such as PNG to JPG or WAV to MP3. Compression targets stored size. Resizing changes dimensions or frame shape. Inspection reads properties without intentionally changing the source. Verification compares an output with a requirement or reference. Many failed workflows come from using one of these operations as if it solved all the others.
NEXDOWNLOAD separates these operations so the interface can expose the settings that actually matter. Some workflows still need more than one step. For example, a passport photo can need both exact pixel dimensions and a strict KB limit. In that case, resize first, inspect the result, then compress only as much as necessary.
What local browser processing changes about the workflow
Supported tools are designed to process source files with browser-side APIs where practical. That can avoid sending the source to a dedicated conversion server, keeps the workflow immediate and makes it easier to work with ordinary files without creating an account. Processing speed and practical limits depend on the browser, device memory, codec support and complexity of the source.
Local source processing is not the same thing as an offline website. The page still loads normal web resources and may use consent, analytics or advertising technologies as explained in the Privacy and Cookie policies. For confidential or regulated material, the organization responsible for the file should decide whether a public browser tool is appropriate.
A safer before-and-after checklist
Before processing, keep the original, write down the actual requirement, confirm the input is readable, and check whether the task involves transparency, page order, metadata, audio, video framing, nested data or a trusted checksum. These details can be more important than the extension itself.
After processing, open the downloaded file rather than trusting the success message. Check the property you intended to change and the properties you expected to preserve. Use the exact verified copy for upload or delivery so the file you tested is the file the recipient receives.
When a browser tool is the wrong tool
A lightweight browser utility is convenient for focused operations, but some jobs belong in specialist software. Examples include signed PDFs that must preserve certification, complex encrypted documents, production video with precise color and codec controls, very large archives, regulated records, or files that repeatedly exceed browser memory.
Choosing desktop or professional software for those cases is not a failure of the web tool. It is part of understanding scope. NEXDOWNLOAD tool pages describe known limits so users can make that decision before repeatedly processing an unsuitable file.
Use the guide library when the decision matters more than the button
The toolbox answers the immediate operational question. The 350-guide library handles the questions around the operation: which format fits the destination, what quality loss means, why a browser rejects a codec, how PDF page sizes differ, why an archive barely shrinks, what a checksum can prove, or how structured data loses information during conversion.
Each tool category links to 50 guides so a visitor can move from a short task to a deeper explanation without searching the entire site. Tool pages also contain verification notes, limitations and related guides for users who land directly from search.