UD5 Toolkit
Chess Position Editor - Online Setup Board & Export FEN
Drag and drop pieces to set up a chess position. Generate FEN string and copy to share. Analyze openings. Local only.
Online Editors - Code & Text
81+ toolsImage Background Blur Tool - Online Portrait Depth Effect
Apply a blur effect to image background while keeping the subject sharp. Simple brush selection for area to keep sharp. CSS+Canvas implementation, local only.
Image Rotate & Flip Tool - Online Exact Degrees
Rotate an image by any angle with a live preview. Adjust background fill. Download the corrected orientation. Canvas‑based.
Online SRT Subtitle Shifter - Adjust Timing & Sync
Load an SRT file and shift all timestamps forward or backward by milliseconds or seconds. Fix out-of-sync subtitles instantly. Download corrected file.
Image Text Watermark Tool - Online Batch Add Copyright
Add semi-transparent text watermark to images. Customize position, opacity, rotation, and font. Batch processing with instant download. Fully local & private.
Auto White Balance - Online Fix Color Casts
Automatically restore natural colors to a photo by removing color casts. Gray world algorithm. One‑click fix. Canvas.
Image Auto Crop Tool - Online Remove White Borders
Automatically crop transparent or solid‑color borders from any image. Just drop the photo and get the tight crop.
Image Lens Blur Effect - Online Fake Depth of Field
Apply a realistic lens blur (bokeh) to an image. Simulate shallow depth of field. Adjust aperture shape and intensity. Local canvas.
CSS Blend Mode Playground – Online background-blend-mode & mix-blend-mode
Load images or use colors and apply all 15 CSS blend modes. Visual tester for creative effects.
Online Audio Click & Pop Remover - Clean Vinyl Recordings
Remove clicks, pops, and crackle from audio recordings. Useful for digitizing vinyl. Threshold‑based local processing.
Image Corner Rounder - Online Each Corner Individually
Visually adjust each corner's radius on an image independently. Preview and download as PNG. For non‑uniform rounding.
Online Video Resizer - Crop & Scale Locally
Resize a video by cropping to a new aspect ratio or scaling up/down. Apply and download the result. Browser‑based.
Image Resize & Pad - Online Fit Without Cropping
Resize an image to exact dimensions and add colored padding to fill the aspect ratio without cropping. Useful for profile grids.
Pixelate Image Tool - Online Block & Censor Editor
Pixelate selected areas of an image to hide faces or sensitive data. Adjust block size. Download the censored result.
Image Slicer Tool - Online Cut into Equal Parts
Slice any image into a grid of smaller images. Download as individual files or a single sprite sheet. For games or posts.
Audio Joiner - Online Concatenate Multiple Files
Upload multiple audio files and join them into a single continuous track. Add crossfade. All local.
Auto Image Enhancer - Online One‑Click Photo Fix
Automatically adjust brightness, contrast, and saturation of a photo. Click to enhance and download. Canvas‑based.
Image Straighten Tool - Online Fix Crooked Horizons
Draw a line along the horizon and the tool rotates the image to make it perfectly level. Small rotation. Canvas editing.
Online Audio Trimmer & Splitter - Cut MP3/WAV Locally
Trim audio files or split into multiple segments using visual waveform. Set start/end markers precisely. Download segments or merged track. Purely browser-based.
Video Audio Merger/Separator - Online Replace or Remove Soundtrack
Remove the original audio from a video and attach a new soundtrack. Or extract audio. All processed locally.
Online Video Reverser - Play & Save Backwards
Reverse any short video clip and download the backward version. Fun for creative effects. Browser‑based.
Pixel Art Upscaler - Online Nearest‑Neighbour Enlarge
Enlarge pixel art or low‑res images without blur. Choose 2x, 4x, 8x. Perfect for sprites. Download scaled PNG.
PDF Page Rotator - Online Fix Upside‑Down Pages
Select which pages to rotate left or right. Save the corrected PDF immediately. All local manipulation.
GIF Loop Counter - Online Change Play Count
Change how many times an animated GIF loops. Set to infinite or a specific number. Download the modified GIF.
Online Video Trimmer - Cut & Save Clips Locally
Set start and end times for a video and trim it without re-encoding. Download the clip. Pure browser.
Online Code Editor (HTML/CSS/JS) - Instant Live Preview
Write HTML, CSS, and JavaScript in separate panes and see the result in real time. Store your snippets locally.
Video Subtitle Burner - Online Hardcode SRT into Video
Merge an SRT subtitle file onto a video directly in the browser. Preview and download the resulting video. All local.
Posterize Image - Online Reduce Color Levels
Reduce the number of colors in your photo to create a bold, pop‑art poster effect. Adjust levels and download.
Online Audio Noise Reducer - Free Background Hum Remover
Remove constant background noise from a short audio clip using a real‑time noise gate and spectral subtraction. All processing stays in your browser.
Simple Audio Waveform Cutter - Online Trim & Loop
Load an audio file and visually trim it by dragging handles on the waveform. Export the trimmed clip. All local.
Remove Specific Color - Online Extract or Delete Hue
Select a color in an image and completely remove it or make it transparent. Great for background removal experiments. Local.
Photo Weather Effects - Online Add Rain, Snow, or Fog
Add realistic rain, snow, or fog to any photo. Control intensity and direction. Download the atmospheric result.
Torn Paper Edge Effect - Online Add to Image
Apply a ripped or torn paper edge to one side of your image. Adjust intensity and style. Download PNG.
Image Hue Shifter - Online Change Colors Easily
Rotate the hue of any image globally. Turn a red car blue instantly. Download the result. Works entirely in the browser.
Image Saturation Adjuster - Online Color Pop Editor
Increase or decrease the color saturation of your photo with a slider. Preview instantly. Download the edited image. Canvas‑based.
Color Splash Effect - Online Isolate a Single Color
Keep one selected color and turn the rest of the image to grayscale. Eye‑catching selective color effect. Pure canvas.
Online Audio Compressor - Reduce Dynamic Range
Apply compression and limiting to an audio file with threshold, ratio, attack, and release controls. Improve loudness. All local.
Audio Volume Normalizer - Online Loudness Equalizer
Adjust an audio file's volume to a target loudness level (e.g., -14 LUFS). Prevent clipping. Works in the browser.
Image Polar Coordinates - Online Swirl & Distort
Transform an image from rectangular to polar coordinates (and back). Create amazing circular swirl effects. Local canvas.
Image Color Temperature - Online Kelvin Filter
Adjust the color temperature of your image: move slider to make it warmer or cooler. Quick white balance fix. Local canvas.
Chromatic Aberration Effect - Online Fake Lens Distort
Shift red and blue channels to create a realistic chromatic aberration (lens distortion) effect. Download glitched photo.
Image Gradient Overlay - Online Add Color Tint
Apply a customizable gradient overlay to any image. Perfect for banners and social media. Download the result. Local.
Image Padding Tool - Online Add White Space Around Photo
Add customizable padding to any image. Make it square or fit a specific aspect ratio by adding whitespace. Download padded PNG.
Image Contrast Enhancer - Online Histogram Equalization
Automatically improve the contrast of dark or washed‑out photos using histogram equalization. One‑click auto‑tune. All canvas‑based.
Image Round Transparent Corners - Online Smooth Edge
Apply rounded corners to an image and keep the background transparent. Save as PNG. Perfect for avatars and icons.
Image Grayscale by Channel - Online B&W Mixer
Convert an image to grayscale by adjusting the contribution of red, green, and blue channels. Simulate B&W film filters.
SRT Subtitle Creator - Online Add Timestamps
Create .srt subtitle files manually by adding lines and setting times with a simple player. Download the result. Local.
Online Image Cropper by URL - Remote Image Edit
Enter an image URL, crop it interactively, and download the result. No upload. Works with any CORS‑enabled image.
Image Brightness & Contrast Slider - Online Photo Tune
Quickly adjust the brightness and contrast of an image with live preview sliders. Download the tuned photo. Canvas.
Image to Paper Texture - Online Old Document Look
Overlay a realistic aged paper, parchment, or canvas texture onto any photo. Vintage effect. Download result.
Image Rotate & Flip Exact - Online 90° Steps
Rotate any JPEG or PNG by exact 90° increments or flip horizontally/vertically. Preserves original quality. Pure browser canvas.
Gradient Map Filter - Online Apply Creative Gradients to Photos
Upload a photo and remap its tones to any gradient. Apply stunning color grading. Download result.
GIF Playback Speed Changer - Online Slow Down or Speed Up
Load an animated GIF and adjust its frame delay to make it slower or faster. Download the modified GIF. All local.
Audio Trimmer - Online Cut MP3 WAV Locally
Select a part of an audio file and trim it to the selection. Playback preview. Download the cropped audio. No upload.
Image Emboss Effect - Online Raised 3D Look
Apply an emboss filter to your photo. Choose direction and depth. Gives a 3D carved stone look. Pure canvas.
Image Vignette Effect - Online Darken Edges
Add a soft vignette to your photo. Control radius, darkness, and feathering. Creates a classic photographic look.
Image Warmth & Coolness Slider - Online White Balance Tint
Slide left for cooler (blue) or right for warmer (orange) tones on your image. Quick photo adjustment. Local.
Image Warm/Cool Filter - Online White Balance Adjuster
Shift the color temperature of your photo towards warm (orange) or cool (blue). Instant canvas filter. Download result.
Text Overlay on Image - Online Add Caption & Watermark
Upload an image, write text, and place it anywhere. Choose font, size, and color. Download the combined image. Private.
Image to Binary Text - Online 1‑Bit High Contrast
Convert any photo into a stark 1‑bit black‑and‑white image (no grays). Adjust threshold. Save as PNG.