PixelTools.io VS https://open-gpt.app/

• Image Converter
  Convert between JPG, PNG, WebP, AVIF, HEIC, SVG, BMP & TIFF
• Image Compressor
  Reduce file size up to 90% with no visible quality loss
• Background Remover
  AI background removal, runs on-device, free & unlimited
• Image Resizer
  Resize to exact pixels or social presets (Instagram, Pinterest, YouTube…)
• Image Upscaler
  AI upscaling up to 2× and 4× to restore sharpness
• Image Cropper
  Crop to any aspect ratio, plus circle crop for avatars
• Watermark Tool
  Add text or image watermarks with full position & opacity control
• Screenshot Beautifier
  Add gradient backgrounds, padding & shadows to screenshots
• Convert PDF to JPG
  Extract PDF pages as JPG or PNG, select pages and resolution
• Convert Image to PDF
  Combine JPG, PNG, WebP or HEIC images into a single PDF, drag to reorder
• Rotate & Flip Image
  Rotate 90°/180°/270°, flip horizontally or vertically, lossless
• Upscale Image
  AI upscaling up to 2× and 4× to restore sharpness
• Add Watermark
  Text or image watermarks with full opacity, size & position control
• Blur Image
  Blur a full image or specific areas with adjustable strength
• Blur Face
  Automatically detect and blur faces, with manual box adjustment
• Pixelate Image
  Mosaic/pixelation effect with adjustable block size
• Invert Image
  Invert colors to create a negative effect
• Make Instagram Grid
  Split an image into a numbered grid of tiles for sequential posting
• Merge PDF
  Combine multiple PDFs into one, drag to reorder
• Split PDF
  Divide a PDF into separate files by page range
• Compress PDF
  Shrink file size by recompressing embedded images
• Delete PDF Pages
  Remove unwanted pages in a click
• Extract PDF Pages
  Pull selected pages into a new file
• Rearrange PDF Pages
  Drag to reorder pages
• Add Page Numbers to PDF
  Stamp page numbers with position, format & start-number control
• Rotate PDF
  Fix sideways or upside-down pages, individually or all at once
• Crop PDF
  Trim margins with a live preview, applied across every page
• Unlock PDF
  Remove password protection and print/edit restrictions
• Sign PDF
  Draw, type or upload a signature and place it on the document
• Annotate PDF
  Add text, highlights, rectangles and arrows
• Extract Text from PDF
  Pull selectable text with paragraph structure, whole document or page range
• Convert Word to PDF
  .docx to PDF with headings, tables and images preserved
• Convert PowerPoint to PDF
  .pptx to PDF, one slide per page
• Convert Excel to PDF
  .xlsx to PDF, scaled to fit the page
• Convert HTML to PDF
  Turn an HTML file or pasted markup into a PDF
• Convert Video Format
  Convert between MP4, MOV, WebM, MKV & AVI
• Compress Video
  Reduce file size with adjustable quality & resolution
• Trim Video
  Cut a video down to an exact start and end point
• Crop Video
  Crop to any region or aspect ratio
• Change Video Speed
  Speed up or slow down video with natural-sounding audio
• Merge Video
  Combine multiple videos, any order
• Convert Video to GIF
  Turn MP4, MOV, WebM or MKV into an animated GIF
• Extract Frame from Video
  Grab a single frame as PNG or JPG
• Remove Audio from Video
  Strip the audio track in one click
• Convert MP4 to MP3
  Extract the audio track from an MP4 video
• Audio Converter
  Convert between WAV, MP3, M4A, OGG & FLAC, or extract audio from video
• Compress Audio
  Reduce file size with an adjustable quality slider
• Trim Audio
  Cut audio to an exact start and end point
• Split Audio
  Divide audio into equal parts or custom split points
• Join Audio
  Combine multiple audio files, any order
• Change Audio Pitch
  Shift pitch up or down without changing speed

• Accessible AI Chat Interface
  Provides a user-friendly web-based interface for interacting with GPT-based AI models without needing to set up API access or coding knowledge.
• No Installation Required
  Being a web application, it can be used directly from a browser without downloading or installing any software.
• Potentially Free or Low-Cost Access
  Many GPT wrapper sites like this offer free tiers or lower-cost access compared to official API pricing, making AI chat more accessible to casual users.
• Quick Setup
  Users can typically start chatting almost immediately after visiting the site, with minimal account creation or configuration steps.
• Cross-Platform Compatibility
  Since it runs in a browser, it can be accessed from various devices including desktops, tablets, and smartphones without platform-specific versions.

Possible disadvantages

• Uncertain Reliability
  Third-party GPT wrapper websites often depend on underlying API access that can be unstable, rate-limited, or discontinued without notice, affecting consistent availability.
• Data Privacy Concerns
  Using an unofficial third-party service to process conversations raises questions about how user data and conversation history are stored, used, or shared.
• Limited Transparency
  It may be unclear which underlying AI model version is being used, how up-to-date it is, or what modifications have been made to the base model's behavior.
• Potential Hidden Costs or Ads
  Free-to-use AI wrapper sites often monetize through ads, premium upsells, or data collection, which may not be clearly disclosed to users upfront.
• Lack of Official Support
  Unlike official AI platforms, unofficial wrapper sites may lack dedicated customer support, regular updates, or accountability if issues arise.