Photoroom

Photoroom

https://app.photoroom.com/

Imageamigo, Remove.bg background, Photopea

Advanced Image Processing For Everyone

https://imageamigo.com/

Remove Image Background

https://www.remove.bg/

Photopea is an advanced image editor, which can work with both raster and vector graphics. You can use it for simple tasks, such as resizing images, as well as complex tasks, such as designing webpages, creating illustrations, processing photographs and more.

https://www.photopea.com/

Online document viewer - over 170 different file types

Online document viewer - over 170 different file types

https://products.groupdocs.app/viewer/total

GroupDocs.Viewer is a fast and efficient API for rendering over 170 different file types.

View documents online Free GroupDocs Apps.

Free online viewers for CAD and 3D formats

1)  Autodesk Viewer
Easily view and share designs in your browser.
Autodesk Viewer makes it easy to share views of your designs and collaborate remotely.
Supported most 2D and 3D files:
including DWG, STEP, DWF, RVT and Solidworks (3DM 3DS A ASM AXM BRD CATPART CATPRODUCT CGR COLLABORATION DAE DDX DDZ DGK DGN DLV3 DMT DWF DWFX DWG * DWT DXF EMODEL EXP F3D FBRD FBX FSCH G GBXML GLB GLTF IAM IDW IFC IGE IGES IGS IPT IWM JT MAX MODEL MPF MSR NEU NWC NWD OBJ OSB PAR PMLPRJ PMLPRJZ PRT PSM PSMODEL RCC RCS RVM RVT ** SAB SAT SCH SESSION SKP SLDASM SLDPRT SMB SMT STE STEP STL STLA STLB STP STPZ VPB VUE WIRE X_B X_T XAS XPR)

https://viewer.autodesk.com/

2) ShareCAD
Supported CAD formats: AutoCAD® DWG, DXF, DWF, HPGL, PLT
Supported 3D formats: STEP, STP, IGES, IGS, BREP, STL, SAT (ACIS), Parasolid® (X_T, X_B), SolidWorks® (SLDPRT), IPT, IFC, OBJ

https://beta.sharecad.org/

3) DWG FastView

View CAD drawings online
Open your CAD drawings in all major browsers with the latest DWG FastView online version, no installation or upgrade needed.
Supported CAD formats: *.ocf;*.dwq;*.dxf;*.dws;*.dwt

https://en.dwgfastview.com/

ONLINECADTOOLS - online tools for engineering and sheet metal work

ONLINECADTOOLS - Great online tools for engineering, piping ventilation and general sheet metal work

... "Each tool provides a form with fields in which you set your dimensions.
The answer is a script (".scr" file that you can open in AutoCAD using the "script" command) or a "DXF" file that is read directly by CAD editors. In most cases, you also get a table with the coordinates of the points on which you can manually draw the corresponding line (for example, on paper or sheet metal)."... 

http://www.onlinecadtools.com/myindex_en.HTM

SHEET METAL:
http://www.onlinecadtools.com/english/html/sheet_metal/index.HTM

         Segment Bend ( Elbow, Knees ):

         Cylindrical 

         Conical type 1 

         Conical type 2 

    

         Square to Round 

  Tee Piece ( T-Junctions ) 

  Tee of 3 pipes with equal diameters

  Saddle Tee 

 

  Simple breeches piece 

  Round Trouser Piece 

   

     Cylinder and plane 

 

  Reducer - Equal and Offset ( Cone and plane )  

  Reducing cone with non-parallel circular foreheads 

  Reducing cone with parallel circular foreheads

  Reducing straight circular cone   (

 

  Screw or helicoid surface (auger, screw conoid)

    

         Spherical segment

         Sphere by meridians

GEARS:

http://www.onlinecadtools.com/english/html/index_gears.HTM

Modular involute  Gears

Involute Internal Splines 

Involute External Splines 

Measurement: Straight external teeths by measuring with rollers or spheres

Chain gears ( Sprockets )

PLANE CURVED LINES:  

http://www.onlinecadtools.com/english/html/index_curves.HTM

Involute curve according to initial and final angle parameter

Involute curve according to initial and final radius vector 

Archimedes spiral according to initial and final angle parameter 

Archimedes spiral according to initial and final radius vector

Parabola

TEXT FIXER Online Text Tools + HTML Tools + Number Tools

TEXT FIXER

This website features text and html changing, converting, and generating tools designed to save you time making web pages or preparing content for web publishing projects or other groovy stuff. Or even use the site to make a random choice.

If you've ever needed online tools to convert plain text to html paragraphs, alphabetize text, generate random words or remove line breaks then this website can save you from hours of needless manual labor.

https://www.textfixer.com/

Online Text Tools:

Text Changing Alphabetical Order Tool (Instantly sort text alphabetically) Alphabetize Text (The older version of the tool) Remove Line Breaks from Text (This one is very popular) Add Line Breaks Online Paragraph to Single Line Converter Word Frequency Counter (Good for SEO type stuff) Random Word Generator Random Sentence Generator Convert line breaks to paragraphs Random Nouns Generator Random Verbs Generator Random Adjective Generator Other Text Tools Title Capitalization Tool Title and Description Letter Counter Plural Noun Generator Remove Duplicate Lines Capitalize the First letter of Sentences Remove Whitespaces Uppercase Text or Lowercase Text Random Letter Generator Word Unscrambler Misc. Reverse Text Generator Online QR Code Generator Random Password Generator Mailto Link Generator Random Decision Maker HTML Code Generators HTML Table Generator (Very handy if you're in a rush) Generate HTML Text Online Javascript Pop-up Window Maker Email HTML Code HTML Compression Compress HTML Code Uncompress HTML Code (Make the code readable again) HTML Conversion Convert a Word Doc to HTML (A very popular tool on this site) Convert Plain Text to HTML Convert URLs to HTML Links Convert CSV Text to HTML Table Encoding Tools HTML Character Encoding Tool (For publishing in non-English languages) Encode URL

Online HTML Tools:

HTML Code Generators HTML Table Generator (Very handy if you're in a rush) HTML List Generator Generate HTML Text Online Javascript Pop-up Window Maker Email HTML Code HTML Compression Compress HTML Code Uncompress HTML Code (Make the code readable again) HTML Conversion Remove HTML Tags from a String (Extract text content easily!) Convert a Word Doc to HTML Convert Plain Text to HTML Convert HTML to Text: Change HTML to plain text. Convert URLs to HTML Links Convert CSV Text to HTML Table Encoding Tools HTML Character Encoding Tool (For publishing in non-English languages) Encode URL Text Changing Alphabetize Text Alphabetical Order Tool (Revised version - I like this one better) Remove Line Breaks from Text (This one is very popular) Word Frequency Counter (Good for SEO type stuff) Random Word Generator (Great brainstorming tool) Number Generating Tools Random Number Generator Tools People Rarely Use Capitalize the First letter of Sentences This works like a charm if you need it. Remove Whitespaces Uppercase Text or Lowercase Text Misc. Online QR Code 

Online Number Tools

Number Generating Tools Random Number Generator Number Converting Tools Binary to Decimal Convert Decimal to Binary (the reverse of the tool above) Number Calculation Tools Square Roots

Flat Spiral Coil (can be used for length calculation of flat spiral coil)

Flat Spiral Coil (can be used for length calculation of flat spiral coil)

https://deepfriedneon.com/tesla_f_calcspiral.html

Keisan Online Calculator

Keisan Online Calculator 
https://keisan.casio.com/

Life     Mathematics     Science     Practical     Other

Keisan Online Calculator provides High Accuracy results and useful calculators for daily life, learning, business and research.

 

LUNAPIC - Open Free Online Photo Editor

Open Free Online Photo Editor
https://www10.lunapic.com/editor/

Photo, sketch and paint effects. For Tumblr, Facebook, Chromebook or WebSites. Lunapics Image software free image, ...
Open from URL |    FaceBook | Chrome | Stock Photos | More Options | Quick Upload

Editing Tools:
Crop Image Transparent Paste / Blend  Add Text  Drawing Tools
Effects and Filters:
Black and White  Color Change  Add Borders  Country Flags  200+ more effects
Art Effects:
Sketch Fairy  Picasso  Watercolor  More Art

Smallpdf - online PDF tools - converter

https://smallpdf.com/

Reduce the size of your PDF without losing quality Compress PDF
Convert Word, PowerPoint and Excel files to and from PDF PDF Converter
Convert PowerPoint presentations to PDF documents PPT to PDF
Convert PDFs to editable PowerPoint presentations PDF to PPT
Transform JPG, PNG, BMP, GIF, and TIFF images to PDF JPG to PDF
Extract images from your PDF or save each page as a separate image PDF to JPG
Convert Excel spreadsheets to PDF documents Excel to PDF
Convert PDFs to editable Excel spreadsheets PDF to Excel
Remove one or multiple pages from your PDF Delete PDF Pages
Add text, shapes, images and freehand annotations to your PDF Edit PDF
Convert Word documents to PDF files Word to PDF
Convert PDFs to editable Word documents PDF to Word
Combine multiple PDFs into one unified document Merge PDF
Extract pages from your PDF or save each page as a separate PDF Split PDF
Rotate one or all pages in your PDF Rotate PDF
Create your signature, sign your PDF and request people to signe Sign PDF
Remove password, encryption, and permission from your PDF Unlock PDF
Add a password and encrypt your PDF file Protect PDF

ILovePDF - ONLINE PDF CONVERTER

https://www.ilovepdf.com/

Every tool you need to work with PDFs in one place. Every tool you need to use PDFs, at your fingertips. All are 100% FREE and easy to use! Merge, split, compress, convert, rotate, unlock and watermark PDFs with just a few clicks.

ORGANIZE PDF: Merge PDF   Split PDF   Remove pages   Extract pages   Organize PDF
OPTIMIZE PDF: Compress PDF   Repair PDF
CONVERT TO PDF: JPG to PDF   WORD to PDF   POWERPOINT to PDF   EXCEL to PDF   HTML to PDF
CONVERT FROM PDF: PDF to JPG   PDF to WORD   PDF to POWERPOINT   PDF to EXCEL   PDF to PDF/A
EDIT PDF: Rotate PDF   Add page numbers   Add watermark
PDF SECURITY: Unlock PDF   Protect PDF