Base64 Encoder and Decoder
Use Base64 Encoder and Decoder
All GotoKit tools run directly online, no download required.
About this tool
Encode or decode text and files as Base64 locally in your browser, with image preview and quick copy tools.
- Images processed locally in your browser — nothing uploaded
- Export as PNG / JPG / WebP
- Batch processing with no usage limits
- No sign-up, works instantly
Compared with common image editing workflows
| Aspect | This tool | Typical alternative |
|---|---|---|
| Start point | Edit directly in the browser | Usually needs a desktop editor |
| Best for | Cropping, background removal, watermarking, resizing | Deep retouching and layered work |
| Export and sharing | Faster PNG/JPG/WebP export | More formats, but more steps |
Docs
Encode or decode text and files as Base64 locally in your browser, with image preview and quick copy tools.
Core Features
- Text to Base64 encoding.
- Base64 to text decoding.
- File upload and automatic Data URL/Base64 conversion.
- Image preview when data represents an image.
- One-click copy for output content.
- Output download as text file.
- 100% local processing in the browser.
How to Use
- Select mode: Encode or Decode.
- Paste input text/Base64/Data URL, or upload a file for conversion.
- Run conversion and review output immediately.
- Copy or download the result, and check image preview if available.
Typical Scenarios
- Convert images or SVG assets to Base64 for inline frontend usage.
- Decode Base64 payloads from APIs during troubleshooting.
- Prepare Base64 text for transport, signature workflows, or storage.
- Generate Data URL strings quickly for mockups and prototyping.
Notes
- Decoding requires valid Base64 input.
- Very large files may consume significant browser memory.
- Preview is shown only when content is recognized as image data.
Last verified: 2026-04-03
Source: marcrobledo/base64-converter
FAQ
Is it free?
Yes, completely free. No signup, no limits.
Encode & decode?
Yes. Encode text/files to Base64, or decode back.
Will data be uploaded?
No. All local; nothing leaves your computer.
What input types?
Plain text and file upload; handles images, docs, etc.
Size limits?
Large files may affect performance. ≤10MB recommended.
Is this tool suitable for ecommerce, social media, or email images?
Yes. Ecommerce images usually need clean edges and consistent sizing, social images need stronger cropping and visual impact, and email images need smaller file sizes. Export different sizes for each target channel.
Are my images uploaded to a server?
Most image tools on the site prioritize local browser-side processing, which is better for privacy-sensitive assets. If any AI feature has a usage cap or depends on a cloud model, the page copy will call that out explicitly.
How do I choose between PNG, JPG, and WebP?
Choose PNG for transparent backgrounds, JPG for photos and heavier compression, and WebP when you want a better balance of quality and file size. If your target platform requires a specific format, follow that first.
Do I need to sign up, download, or install anything?
Most Gotokit tools are designed to open directly in the browser without a separate install. If a tool has a quota, browser requirement, or third-party dependency, the page copy will state that clearly.
More from Image Tools
All Image Tools toolsAI Pet Background Remover — Remove & Replace Pet Photo Backgrounds
Free AI-powered pet background remover. Instantly remove backgrounds from cat, dog & pet photos. Get transparent PNG or replace with colors, gradients & scenes. No signup required.
Image to Base64 Converter
Convert images to Base64, Data URI, CSS, HTML, or JSON output in your browser, with optional compression for smaller results.
Online Vector SVG/DXF/EPS Format Converter
Free online vector format converter. Convert between SVG, DXF, and EPS in any direction — all processing done locally in your browser.
Code to Image Generator
Turn code snippets into clean, shareable images with theme, font, line number, and padding controls, then export high-quality PNGs.
Image to Text OCR
Extract text from images in more than 100 languages with browser-based OCR powered by Tesseract.js.
Simple Image to Text OCR
Upload an image, choose a language, and extract copyable plain text in seconds with a minimal OCR workflow.
Receipt and Invoice OCR
Extract structured text from receipts, invoices, and tickets, including dates, amounts, sellers, and detected document type.
App Icon Generator
Generate app icon sets for iOS, Android, macOS, watchOS, and more from one source image, then download PNG bundles.
Image Format Converter
Convert JPG, PNG, WebP, BMP, and GIF files both ways in your browser using drag and drop, paste, or file upload.
Online Image Denoiser - Remove Noise, Enhance Quality
Remove noise from images with bilateral, median, and Gaussian filters. Edge-preserving denoising runs entirely in your browser.
Image Color Adjuster - Brightness, Contrast, Saturation & Filters
Adjust image brightness, contrast, and saturation, then apply one-tap filters. 100% local processing in your browser.
Image Compressor
Compress JPG, PNG, and WebP images locally with quality and resize controls inspired by desktop-grade tools.
Image Watermark Tool
Add text or image watermarks to photos with controls for font, color, opacity, position, tiling, and output.
AI Watermark Remover
Remove logos, subtitles, and common watermarks automatically with AI, without manual brushing or masking.
Product Background Remover
Remove backgrounds from product photos automatically and export clean transparent PNGs for listings, catalogs, and ads.
Portrait Background Remover
Remove portrait backgrounds automatically with AI human segmentation and export transparent PNGs in standard or HD mode.
Chinese ID Card Recognition
Upload Chinese ID card images to auto-extract name, ID number, birth date, gender, ethnicity, and address. Aliyun OCR with high accuracy. Images auto-deleted.
ID Photo Maker
Turn a front-facing portrait into a printable ID photo with background replacement, standard photo sizes, and 6-inch print-sheet output.
Image to Favicon Generator
Create a multi-size favicon.ico plus PNG favicon files from one image, along with a ready-to-paste HTML snippet.
AI Image Upscaler
Upscale images 1x to 4x with AI super-resolution to recover detail, sharpen edges, and reduce visible noise.
Document Scanner and Rectifier
Flatten and clean up document photos with perspective correction, smart or manual edge selection, and scan-style enhancement.
Batch Image Resizer — Resize Multiple Images Online
Free online batch image resizer: upload multiple images at once, set custom width/height or scale by ratio. Local processing, no upload, no login. Export JPG/PNG/WebP and download as a single ZIP.