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Free Gel Electrophoresis Diagram Generator

Create a labeled gel schematic from manually entered lanes and bands. Switch between a band diagram and an apparatus view, then export SVG or PNG.

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Free Gel Electrophoresis Diagram Generator— templates & examples

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Free Gel Electrophoresis Diagram Generator

Create a labeled gel schematic from manually entered lanes and bands. Switch between a band diagram and an apparatus view, then export SVG or PNG.

A gel electrophoresis diagram shows sample lanes, a size ladder and the direction in which charged molecules move through a gel. Create a labeled gel schematic from manually entered lanes and bands. Switch between a band diagram and an apparatus view, then export SVG or PNG.

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Labeled DNA gel electrophoresis schematic with manually placed bands and a reference ladder
  • Arrange sample lanes and bands
  • Label fragment sizes
  • Explain the apparatus and direction
  • Prepare an editable schematic

Gel Electrophoresis Diagram Generator Features

Use SciFig to work with the specific inputs, labels and exported outputs described below.

Arrange sample lanes and bands

Enter lane names and the bands you want to illustrate. SciFig keeps each lane and its manually specified bands together, so a teaching example can distinguish a ladder, control and sample lanes. Change the schematic input directly when the example needs a different set of bands.

  • Name sample lanes
  • Enter manual bands
  • Keep ladder and samples distinct
Arrange sample lanes and bands

Label fragment sizes

Add a size ladder and band-size annotations to explain how fragments are compared. The figure is an illustrative gel electrophoresis diagram built from your input, rather than an analysis of an experimental photograph. Keep the size labels with the lane diagram so their meaning remains visible after export.

  • Add a size ladder
  • Show entered size labels
  • Retain lane identities
Label fragment sizes

Explain the apparatus and direction

Switch to the apparatus view to show the wells, electrodes and migration direction. For the DNA example, the wells are near the negative electrode and migration proceeds toward the positive electrode. This view connects the band schematic with the physical arrangement introduced in a lesson or methods overview.

  • Show wells and electrodes
  • Follow the migration arrow
  • Switch apparatus and band views
Explain the apparatus and direction

Prepare an editable schematic

Choose colors and labels that fit the explanation, then export SVG or PNG. Save the JSON settings when you want to reopen the same lane arrangement. SciFig’s gel electrophoresis diagram generator renders the schematic locally from the entered settings, allowing the teaching figure to evolve with the accompanying text.

  • Edit the diagram labels
  • Download SVG or PNG
  • Reopen saved settings
Prepare an editable schematic

How to Create the Diagram

Follow the local controls to prepare the gel electrophoresis diagram from your input.

  1. Choose a gel schematic preset

    Start with a lane example or apparatus view. Decide whether the figure explains the equipment, the comparison between lanes or the role of a ladder. The preset provides a labeled starting point that you can change with the local controls.

  2. Enter lane and band information

    Name the lanes and specify the bands for your illustrative example. Add a size ladder when the audience needs a reference. Keep the same lane labels in the figure and its caption so the sample identities remain clear.

  3. Set the view and annotations

    Choose the band or apparatus view and adjust the visible labels and colors. In a DNA electrophoresis explanation, keep the wells and electrode signs consistent with migration from the negative side toward the positive side.

  4. Export the labeled diagram

    Download SVG for a vector figure or PNG for a worksheet or slide. Save JSON settings to preserve the lane arrangement and annotations. Reopen the settings in SciFig when the same schematic needs a revised label or another sample lane.

Ways to Use the Diagram

Choose a focused figure for the question and document you are preparing.

Gel apparatus showing wells near the negative electrode and migration toward the positive electrode

Introduce DNA electrophoresis

Show where samples enter the gel and which direction DNA migrates. Pair an apparatus view with the lane schematic so students can connect electrode polarity, wells and the resulting band pattern.

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Ladder lane and two sample lanes with manual band-size labels

Explain the size ladder

Place the ladder beside named sample lanes and retain the entered fragment-size labels. The diagram can introduce comparisons between bands without presenting the illustration as an independently measured experimental result.

Explore this example
Gel band comparison without individual band labels

Build a classroom worksheet

Prepare a simple band pattern for an interpretation exercise. A second exported view can retain the labels used in the explanation. The same settings file keeps the exercise and discussion figures aligned.

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Ladder lane and two sample lanes with manual band-size labels

Describe an experiment layout

Create a schematic of which sample occupies each lane before a presentation. Lane names provide the bridge between the written experimental layout and the diagram. Use separate experimental evidence for measured results.

Explore this example
Gel apparatus showing wells near the negative electrode and migration toward the positive electrode

Make a methods overview

Use the apparatus view to show the relation between the gel, wells and electrodes. Export a labeled panel to accompany a broader methods diagram, keeping the schematic purpose and migration direction explicit.

Explore this example
Upward DNA migration with the negative electrode below the wells and positive electrode at the top

Coordinate figure revisions

Save the lane settings when a collaborator will update a teaching panel. They can change a lane name or band label and export the revised schematic from the same configuration, without recreating the entire diagram.

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How Researchers Use SciFig

For an introductory laboratory handout, I needed a gel electrophoresis diagram that clearly separated the ladder from the sample lanes. I entered the band sizes and placed each band manually. The SVG showed our chosen labels and polarity, giving students a schematic to annotate before they saw any experimental gel photographs.

Priya Nair

Molecular Biology Teaching Fellow · University of Manchester

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