| Year | Title | Role | Notes |
| 1991 | A Little Piece of Heaven | Princess aka "Hazel" | Television film |
| Reading Rainbow | Herself | Episode: "Snowy Day: Stories and Poems" |
| 1992–1993 | All My Children | Bianca Montgomery | 10 episodes |
| 1993 | Gypsy | Baby June | Television film |
| 1994–2000 | Party of Five | Claudia Salinger | Series regular; 142 episodes |
| 1996 | ABC Afterschool Specials | Carly Gallagher | Episode: "Educating Mom" |
| Gargoyles | Kim, Bobbi Porter | Voice, 2 episodes |
| Aaahh!!! Real Monsters | Girl (5), Kids (2), Girl (6) Additional voices | Voice, 3 episodes |
| 1997 | Adventures from the Book of Virtues | The Younger Daughter | Voice, episode: "Respect" |
| When Secrets Kill | Jenny Newhall | Television film |
| Hey Arnold! | Ruth P. McDougal | Voice, 2 episodes |
| Nightmare Ned | Little Girl | Voice, episode: "Magic Bus" |
| 1998 | Stories from My Childhood | Jenny | Episode: "The Last Petal" |
| Hercules | Callista | Voice, episode: "Hercules and the Kids" |
| 1998–2004 | The Wild Thornberrys | Eliza Thornberry, additional voices | Voice, main role |
| 1999–2000, 2011–2012, 2018 | Family Guy | Meg Griffin, Jan Brady | Voice, 15 episodes; uncredited |
| 2001 | The Wild Thornberrys: The Origin of Donnie | Eliza Thornberry | Voice, television film |
| 2002 | The Proud Family | Additional voices | Episode: "Romeo Must Wed" |
| Strong Medicine | Mary | Episode: "Heartbeat" |
| The Drew Carey Show | Grace | Episode: "Drew's Girl Friday" |
| 2003 | Stuart Little | Katy | Voice, episode: "Skateboard Dogz" |
| Punk'd | Herself | Episode: "#1.4" |
| 2004 | The Brooke Ellison Story | Brooke Ellison | Television film |
| 2005 | American Dragon: Jake Long | Jasmine | Voice, episode: "Dragon Breath" |
| Super Robot Monkey Team Hyperforce Go! | Certhana | Voice, episode: "Girl Trouble" |
| 2005–2006 | Bratz | Kaycee | Voice, 17 episodes |
| 2006 | She Said/He Said | Unknown role | Television film |
| Hello Sister, Goodbye Life | Olivia |
| Ghost Whisperer | Donna Ellis | Episode: "Love Still Won't Die" |
| 2007 | Eloise: The Animated Series | Ida | Voice, episode: "Eloise Goes Hollywood (Part 1)" |
| What If God Were the Sun? | Jamie Spagnoletti | Television film |
| 2008 | Untitled Liz Meriwether Project | Liz Meriwether |
| 2008–2009 | The Spectacular Spider-Man | Gwen Stacy | Voice, main role |
| 2009 | The Lost | Jane | Television film |
| Glenn Martin, DDS | Amish Girls | Voice, episode: "Amish Anguish" |
| 2010 | Elevator Girl | Liberty Taylor | Hallmark Channel Television movie |
| 2011 | Mike DA Mustang | Angel | Television film |
| Allen Gregory | Beth | Voice, 6 episodes |
| 2011–2012 | Generator Rex | Jojo | Voice, 2 episodes |
| 2011–2016 | Transformers: Rescue Bots | Dani Burns, additional voices | Voice, main role |
| 2011–2013, 2019–2022 | Young Justice | Zatanna Zatara | Voice, 18 episodes |
| 2012 | Doc McStuffins | Gabby the Giraffe, Little Girl | Voice, episode: "Arcade Escapade" |
| Imaginary Friend | Emma | Television film |
| The Avengers: Earth's Mightiest Heroes | Daisy Johnson / Quake | Voice, 2 episodes |
| Matchmaker Santa | Melanie | Hallmark Channel Television Movie |
| 2013 | Off Season: Lex Morrison Story | Sally Summers | Television film |
| Scarecrow | Kristen Miller | Television film |
| Non-Stop | Amy Nightingale | Television film |
| 2013–2014 | Baby Daddy | Dr. Amy Shaw | Recurring role; 6 episodes |
